Home / 21,264.59-29,343.23-12,312.70

Finding the Fourth Proportional to 21,264.59, 29,343.23 and 12,312.70

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Solution

The fourth proportional to 21,264.59, 29,343.23 and 12,312.70 is: 16,990.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,264.59 : 29,343.23 = 12,312.70 : x
  2. Step 2: Convert to fraction form
    21,264.59/29,343.23 = 12,312.70/x
  3. Step 3: Cross multiply
    21,264.59x = 29,343.23 × 12,312.70
  4. Step 4: Simplify right side
    21,264.59x = 361,294,289.78
  5. Step 5: Solve for x
    x = 361,294,289.78/21,264.59
  6. Step 6: Final answer
    x = 16,990.42

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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.