Home / 21,516.60-29,695.68-12,085.16

Finding the Fourth Proportional to 21,516.60, 29,695.68 and 12,085.16

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Solution

The fourth proportional to 21,516.60, 29,695.68 and 12,085.16 is: 16,679.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,516.60 : 29,695.68 = 12,085.16 : x
  2. Step 2: Convert to fraction form
    21,516.60/29,695.68 = 12,085.16/x
  3. Step 3: Cross multiply
    21,516.60x = 29,695.68 × 12,085.16
  4. Step 4: Simplify right side
    21,516.60x = 358,877,089.43
  5. Step 5: Solve for x
    x = 358,877,089.43/21,516.60
  6. Step 6: Final answer
    x = 16,679.08

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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.