Home / 21,271.28-29,317.28-15,593.97

Finding the Fourth Proportional to 21,271.28, 29,317.28 and 15,593.97

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Solution

The fourth proportional to 21,271.28, 29,317.28 and 15,593.97 is: 21,492.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.28 : 29,317.28 = 15,593.97 : x
  2. Step 2: Convert to fraction form
    21,271.28/29,317.28 = 15,593.97/x
  3. Step 3: Cross multiply
    21,271.28x = 29,317.28 × 15,593.97
  4. Step 4: Simplify right side
    21,271.28x = 457,172,706.83
  5. Step 5: Solve for x
    x = 457,172,706.83/21,271.28
  6. Step 6: Final answer
    x = 21,492.49

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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.