Home / 15,538.98-21,443.86-9,165.64

Finding the Fourth Proportional to 15,538.98, 21,443.86 and 9,165.64

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Solution

The fourth proportional to 15,538.98, 21,443.86 and 9,165.64 is: 12,648.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.98 : 21,443.86 = 9,165.64 : x
  2. Step 2: Convert to fraction form
    15,538.98/21,443.86 = 9,165.64/x
  3. Step 3: Cross multiply
    15,538.98x = 21,443.86 × 9,165.64
  4. Step 4: Simplify right side
    15,538.98x = 196,546,700.97
  5. Step 5: Solve for x
    x = 196,546,700.97/15,538.98
  6. Step 6: Final answer
    x = 12,648.62

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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.