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Finding the Fourth Proportional to 15,250.40, 21,047 and 9,589.38

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Solution

The fourth proportional to 15,250.40, 21,047 and 9,589.38 is: 13,234.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,250.40 : 21,047 = 9,589.38 : x
  2. Step 2: Convert to fraction form
    15,250.40/21,047 = 9,589.38/x
  3. Step 3: Cross multiply
    15,250.40x = 21,047 × 9,589.38
  4. Step 4: Simplify right side
    15,250.40x = 201,827,680.86
  5. Step 5: Solve for x
    x = 201,827,680.86/15,250.40
  6. Step 6: Final answer
    x = 13,234.25

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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.