Home / 18,112.83-25,037.53-15,111.18

Finding the Fourth Proportional to 18,112.83, 25,037.53 and 15,111.18

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Solution

The fourth proportional to 18,112.83, 25,037.53 and 15,111.18 is: 20,888.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,112.83 : 25,037.53 = 15,111.18 : x
  2. Step 2: Convert to fraction form
    18,112.83/25,037.53 = 15,111.18/x
  3. Step 3: Cross multiply
    18,112.83x = 25,037.53 × 15,111.18
  4. Step 4: Simplify right side
    18,112.83x = 378,346,622.59
  5. Step 5: Solve for x
    x = 378,346,622.59/18,112.83
  6. Step 6: Final answer
    x = 20,888.32

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Half scale
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Double scale
Find fourth proportional to 18,113.83, 25,038.91 and 15,112.18
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.