Home / 21,455.28-29,626.32-16,140.88

Finding the Fourth Proportional to 21,455.28, 29,626.32 and 16,140.88

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Solution

The fourth proportional to 21,455.28, 29,626.32 and 16,140.88 is: 22,287.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455.28 : 29,626.32 = 16,140.88 : x
  2. Step 2: Convert to fraction form
    21,455.28/29,626.32 = 16,140.88/x
  3. Step 3: Cross multiply
    21,455.28x = 29,626.32 × 16,140.88
  4. Step 4: Simplify right side
    21,455.28x = 478,194,875.96
  5. Step 5: Solve for x
    x = 478,194,875.96/21,455.28
  6. Step 6: Final answer
    x = 22,287.98

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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.