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Finding the Fourth Proportional to 15,342.70, 22,985.70 and 8,749.30

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Solution

The fourth proportional to 15,342.70, 22,985.70 and 8,749.30 is: 13,107.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.70 : 22,985.70 = 8,749.30 : x
  2. Step 2: Convert to fraction form
    15,342.70/22,985.70 = 8,749.30/x
  3. Step 3: Cross multiply
    15,342.70x = 22,985.70 × 8,749.30
  4. Step 4: Simplify right side
    15,342.70x = 201,108,785.01
  5. Step 5: Solve for x
    x = 201,108,785.01/15,342.70
  6. Step 6: Final answer
    x = 13,107.78

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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.