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Finding the Fourth Proportional to 15,339.70, 23,009.55 and 9,507.70

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Solution

The fourth proportional to 15,339.70, 23,009.55 and 9,507.70 is: 14,261.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,339.70 : 23,009.55 = 9,507.70 : x
  2. Step 2: Convert to fraction form
    15,339.70/23,009.55 = 9,507.70/x
  3. Step 3: Cross multiply
    15,339.70x = 23,009.55 × 9,507.70
  4. Step 4: Simplify right side
    15,339.70x = 218,767,898.54
  5. Step 5: Solve for x
    x = 218,767,898.54/15,339.70
  6. Step 6: Final answer
    x = 14,261.55

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Half scale
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Similar ratio
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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.