Home / 21,966.30-30,312-12,534.66

Finding the Fourth Proportional to 21,966.30, 30,312 and 12,534.66

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Solution

The fourth proportional to 21,966.30, 30,312 and 12,534.66 is: 17,296.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,966.30 : 30,312 = 12,534.66 : x
  2. Step 2: Convert to fraction form
    21,966.30/30,312 = 12,534.66/x
  3. Step 3: Cross multiply
    21,966.30x = 30,312 × 12,534.66
  4. Step 4: Simplify right side
    21,966.30x = 379,950,613.92
  5. Step 5: Solve for x
    x = 379,950,613.92/21,966.30
  6. Step 6: Final answer
    x = 17,296.98

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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.