Home / 21,285.28-29,350.20-14,572

Finding the Fourth Proportional to 21,285.28, 29,350.20 and 14,572

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Solution

The fourth proportional to 21,285.28, 29,350.20 and 14,572 is: 20,093.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.28 : 29,350.20 = 14,572 : x
  2. Step 2: Convert to fraction form
    21,285.28/29,350.20 = 14,572/x
  3. Step 3: Cross multiply
    21,285.28x = 29,350.20 × 14,572
  4. Step 4: Simplify right side
    21,285.28x = 427,691,114.40
  5. Step 5: Solve for x
    x = 427,691,114.40/21,285.28
  6. Step 6: Final answer
    x = 20,093.28

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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.