Home / 21,073.52-29,082.29-12,121.01

Finding the Fourth Proportional to 21,073.52, 29,082.29 and 12,121.01

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Solution

The fourth proportional to 21,073.52, 29,082.29 and 12,121.01 is: 16,727.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.52 : 29,082.29 = 12,121.01 : x
  2. Step 2: Convert to fraction form
    21,073.52/29,082.29 = 12,121.01/x
  3. Step 3: Cross multiply
    21,073.52x = 29,082.29 × 12,121.01
  4. Step 4: Simplify right side
    21,073.52x = 352,506,727.91
  5. Step 5: Solve for x
    x = 352,506,727.91/21,073.52
  6. Step 6: Final answer
    x = 16,727.47

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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.