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Finding the Fourth Proportional to 12,359.70, 18,539.55 and 10,901.70

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Solution

The fourth proportional to 12,359.70, 18,539.55 and 10,901.70 is: 16,352.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,359.70 : 18,539.55 = 10,901.70 : x
  2. Step 2: Convert to fraction form
    12,359.70/18,539.55 = 10,901.70/x
  3. Step 3: Cross multiply
    12,359.70x = 18,539.55 × 10,901.70
  4. Step 4: Simplify right side
    12,359.70x = 202,112,612.24
  5. Step 5: Solve for x
    x = 202,112,612.24/12,359.70
  6. Step 6: Final answer
    x = 16,352.55

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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.