Home / 21,607.17-29,819.85-13,111.44

Finding the Fourth Proportional to 21,607.17, 29,819.85 and 13,111.44

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Solution

The fourth proportional to 21,607.17, 29,819.85 and 13,111.44 is: 18,094.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,607.17 : 29,819.85 = 13,111.44 : x
  2. Step 2: Convert to fraction form
    21,607.17/29,819.85 = 13,111.44/x
  3. Step 3: Cross multiply
    21,607.17x = 29,819.85 × 13,111.44
  4. Step 4: Simplify right side
    21,607.17x = 390,981,347.67
  5. Step 5: Solve for x
    x = 390,981,347.67/21,607.17
  6. Step 6: Final answer
    x = 18,094.98

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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.