Home / 21,496.80-29,666.40-12,542.88

Finding the Fourth Proportional to 21,496.80, 29,666.40 and 12,542.88

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Solution

The fourth proportional to 21,496.80, 29,666.40 and 12,542.88 is: 17,309.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,496.80 : 29,666.40 = 12,542.88 : x
  2. Step 2: Convert to fraction form
    21,496.80/29,666.40 = 12,542.88/x
  3. Step 3: Cross multiply
    21,496.80x = 29,666.40 × 12,542.88
  4. Step 4: Simplify right side
    21,496.80x = 372,102,095.23
  5. Step 5: Solve for x
    x = 372,102,095.23/21,496.80
  6. Step 6: Final answer
    x = 17,309.65

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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.