Home / 21,060.68-31,600.88-9,212.91

Finding the Fourth Proportional to 21,060.68, 31,600.88 and 9,212.91

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Solution

The fourth proportional to 21,060.68, 31,600.88 and 9,212.91 is: 13,823.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.68 : 31,600.88 = 9,212.91 : x
  2. Step 2: Convert to fraction form
    21,060.68/31,600.88 = 9,212.91/x
  3. Step 3: Cross multiply
    21,060.68x = 31,600.88 × 9,212.91
  4. Step 4: Simplify right side
    21,060.68x = 291,136,017.30
  5. Step 5: Solve for x
    x = 291,136,017.30/21,060.68
  6. Step 6: Final answer
    x = 13,823.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.