Home / 18,697.50-25,805.86-11,148.19

Finding the Fourth Proportional to 18,697.50, 25,805.86 and 11,148.19

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Solution

The fourth proportional to 18,697.50, 25,805.86 and 11,148.19 is: 15,386.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.50 : 25,805.86 = 11,148.19 : x
  2. Step 2: Convert to fraction form
    18,697.50/25,805.86 = 11,148.19/x
  3. Step 3: Cross multiply
    18,697.50x = 25,805.86 × 11,148.19
  4. Step 4: Simplify right side
    18,697.50x = 287,688,538.01
  5. Step 5: Solve for x
    x = 287,688,538.01/18,697.50
  6. Step 6: Final answer
    x = 15,386.47

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Double scale
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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.