Home / 21,051.90-29,053.66-15,737.50

Finding the Fourth Proportional to 21,051.90, 29,053.66 and 15,737.50

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Solution

The fourth proportional to 21,051.90, 29,053.66 and 15,737.50 is: 21,719.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.90 : 29,053.66 = 15,737.50 : x
  2. Step 2: Convert to fraction form
    21,051.90/29,053.66 = 15,737.50/x
  3. Step 3: Cross multiply
    21,051.90x = 29,053.66 × 15,737.50
  4. Step 4: Simplify right side
    21,051.90x = 457,231,974.25
  5. Step 5: Solve for x
    x = 457,231,974.25/21,051.90
  6. Step 6: Final answer
    x = 21,719.27

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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.