Home / 21,402.57-29,534.99-11,972.01

Finding the Fourth Proportional to 21,402.57, 29,534.99 and 11,972.01

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Solution

The fourth proportional to 21,402.57, 29,534.99 and 11,972.01 is: 16,521.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.57 : 29,534.99 = 11,972.01 : x
  2. Step 2: Convert to fraction form
    21,402.57/29,534.99 = 11,972.01/x
  3. Step 3: Cross multiply
    21,402.57x = 29,534.99 × 11,972.01
  4. Step 4: Simplify right side
    21,402.57x = 353,593,135.77
  5. Step 5: Solve for x
    x = 353,593,135.77/21,402.57
  6. Step 6: Final answer
    x = 16,521.06

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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.