Home / 28,153.46-38,852.64-15,578.18

Finding the Fourth Proportional to 28,153.46, 38,852.64 and 15,578.18

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Solution

The fourth proportional to 28,153.46, 38,852.64 and 15,578.18 is: 21,498.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,153.46 : 38,852.64 = 15,578.18 : x
  2. Step 2: Convert to fraction form
    28,153.46/38,852.64 = 15,578.18/x
  3. Step 3: Cross multiply
    28,153.46x = 38,852.64 × 15,578.18
  4. Step 4: Simplify right side
    28,153.46x = 605,253,419.40
  5. Step 5: Solve for x
    x = 605,253,419.40/28,153.46
  6. Step 6: Final answer
    x = 21,498.37

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Half scale
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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.