Home / 21,572.15-29,768.42-12,141.32

Finding the Fourth Proportional to 21,572.15, 29,768.42 and 12,141.32

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Solution

The fourth proportional to 21,572.15, 29,768.42 and 12,141.32 is: 16,754.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,572.15 : 29,768.42 = 12,141.32 : x
  2. Step 2: Convert to fraction form
    21,572.15/29,768.42 = 12,141.32/x
  3. Step 3: Cross multiply
    21,572.15x = 29,768.42 × 12,141.32
  4. Step 4: Simplify right side
    21,572.15x = 361,427,703.57
  5. Step 5: Solve for x
    x = 361,427,703.57/21,572.15
  6. Step 6: Final answer
    x = 16,754.37

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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.