Home / 21,700.34-29,946.19-12,748.66

Finding the Fourth Proportional to 21,700.34, 29,946.19 and 12,748.66

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Solution

The fourth proportional to 21,700.34, 29,946.19 and 12,748.66 is: 17,592.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,700.34 : 29,946.19 = 12,748.66 : x
  2. Step 2: Convert to fraction form
    21,700.34/29,946.19 = 12,748.66/x
  3. Step 3: Cross multiply
    21,700.34x = 29,946.19 × 12,748.66
  4. Step 4: Simplify right side
    21,700.34x = 381,773,644.87
  5. Step 5: Solve for x
    x = 381,773,644.87/21,700.34
  6. Step 6: Final answer
    x = 17,592.98

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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.