Home / 21,337.32-29,456.58-15,588.33

Finding the Fourth Proportional to 21,337.32, 29,456.58 and 15,588.33

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Solution

The fourth proportional to 21,337.32, 29,456.58 and 15,588.33 is: 21,519.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,337.32 : 29,456.58 = 15,588.33 : x
  2. Step 2: Convert to fraction form
    21,337.32/29,456.58 = 15,588.33/x
  3. Step 3: Cross multiply
    21,337.32x = 29,456.58 × 15,588.33
  4. Step 4: Simplify right side
    21,337.32x = 459,178,915.71
  5. Step 5: Solve for x
    x = 459,178,915.71/21,337.32
  6. Step 6: Final answer
    x = 21,519.99

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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.