Home / 21,273.90-29,355.42-12,320.16

Finding the Fourth Proportional to 21,273.90, 29,355.42 and 12,320.16

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Solution

The fourth proportional to 21,273.90, 29,355.42 and 12,320.16 is: 17,000.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273.90 : 29,355.42 = 12,320.16 : x
  2. Step 2: Convert to fraction form
    21,273.90/29,355.42 = 12,320.16/x
  3. Step 3: Cross multiply
    21,273.90x = 29,355.42 × 12,320.16
  4. Step 4: Simplify right side
    21,273.90x = 361,663,471.27
  5. Step 5: Solve for x
    x = 361,663,471.27/21,273.90
  6. Step 6: Final answer
    x = 17,000.34

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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.