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Finding the Fourth Proportional to 15,489.84, 23,215.73 and 7,158.59

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Solution

The fourth proportional to 15,489.84, 23,215.73 and 7,158.59 is: 10,729.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,489.84 : 23,215.73 = 7,158.59 : x
  2. Step 2: Convert to fraction form
    15,489.84/23,215.73 = 7,158.59/x
  3. Step 3: Cross multiply
    15,489.84x = 23,215.73 × 7,158.59
  4. Step 4: Simplify right side
    15,489.84x = 166,191,740.75
  5. Step 5: Solve for x
    x = 166,191,740.75/15,489.84
  6. Step 6: Final answer
    x = 10,729.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.