Home / 15,331.80-21,158.64-8,617.08

Finding the Fourth Proportional to 15,331.80, 21,158.64 and 8,617.08

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Solution

The fourth proportional to 15,331.80, 21,158.64 and 8,617.08 is: 11,892.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.80 : 21,158.64 = 8,617.08 : x
  2. Step 2: Convert to fraction form
    15,331.80/21,158.64 = 8,617.08/x
  3. Step 3: Cross multiply
    15,331.80x = 21,158.64 × 8,617.08
  4. Step 4: Simplify right side
    15,331.80x = 182,325,693.57
  5. Step 5: Solve for x
    x = 182,325,693.57/15,331.80
  6. Step 6: Final answer
    x = 11,892.00

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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.