Home / 20,570.04-28,385.10-11,616.30

Finding the Fourth Proportional to 20,570.04, 28,385.10 and 11,616.30

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Solution

The fourth proportional to 20,570.04, 28,385.10 and 11,616.30 is: 16,029.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,570.04 : 28,385.10 = 11,616.30 : x
  2. Step 2: Convert to fraction form
    20,570.04/28,385.10 = 11,616.30/x
  3. Step 3: Cross multiply
    20,570.04x = 28,385.10 × 11,616.30
  4. Step 4: Simplify right side
    20,570.04x = 329,729,837.13
  5. Step 5: Solve for x
    x = 329,729,837.13/20,570.04
  6. Step 6: Final answer
    x = 16,029.62

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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.