Home / 21,236.16-29,308.86-15,287.52

Finding the Fourth Proportional to 21,236.16, 29,308.86 and 15,287.52

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Solution

The fourth proportional to 21,236.16, 29,308.86 and 15,287.52 is: 21,098.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.16 : 29,308.86 = 15,287.52 : x
  2. Step 2: Convert to fraction form
    21,236.16/29,308.86 = 15,287.52/x
  3. Step 3: Cross multiply
    21,236.16x = 29,308.86 × 15,287.52
  4. Step 4: Simplify right side
    21,236.16x = 448,059,783.43
  5. Step 5: Solve for x
    x = 448,059,783.43/21,236.16
  6. Step 6: Final answer
    x = 21,098.91

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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.