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Finding the Fourth Proportional to 15,772.80, 21,767.04 and 9,058.08

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Solution

The fourth proportional to 15,772.80, 21,767.04 and 9,058.08 is: 12,500.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,772.80 : 21,767.04 = 9,058.08 : x
  2. Step 2: Convert to fraction form
    15,772.80/21,767.04 = 9,058.08/x
  3. Step 3: Cross multiply
    15,772.80x = 21,767.04 × 9,058.08
  4. Step 4: Simplify right side
    15,772.80x = 197,167,589.68
  5. Step 5: Solve for x
    x = 197,167,589.68/15,772.80
  6. Step 6: Final answer
    x = 12,500.48

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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.