Home / 21,210.68-29,269.59-12,713.13

Finding the Fourth Proportional to 21,210.68, 29,269.59 and 12,713.13

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Solution

The fourth proportional to 21,210.68, 29,269.59 and 12,713.13 is: 17,543.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.68 : 29,269.59 = 12,713.13 : x
  2. Step 2: Convert to fraction form
    21,210.68/29,269.59 = 12,713.13/x
  3. Step 3: Cross multiply
    21,210.68x = 29,269.59 × 12,713.13
  4. Step 4: Simplify right side
    21,210.68x = 372,108,102.72
  5. Step 5: Solve for x
    x = 372,108,102.72/21,210.68
  6. Step 6: Final answer
    x = 17,543.44

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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.