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Finding the Fourth Proportional to 15,347.80, 23,000.64 and 7,937.20

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Solution

The fourth proportional to 15,347.80, 23,000.64 and 7,937.20 is: 11,894.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.80 : 23,000.64 = 7,937.20 : x
  2. Step 2: Convert to fraction form
    15,347.80/23,000.64 = 7,937.20/x
  3. Step 3: Cross multiply
    15,347.80x = 23,000.64 × 7,937.20
  4. Step 4: Simplify right side
    15,347.80x = 182,560,679.81
  5. Step 5: Solve for x
    x = 182,560,679.81/15,347.80
  6. Step 6: Final answer
    x = 11,894.91

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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.