Home / 13,688.56-20,532.84-7,841.08

Finding the Fourth Proportional to 13,688.56, 20,532.84 and 7,841.08

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Solution

The fourth proportional to 13,688.56, 20,532.84 and 7,841.08 is: 11,761.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.56 : 20,532.84 = 7,841.08 : x
  2. Step 2: Convert to fraction form
    13,688.56/20,532.84 = 7,841.08/x
  3. Step 3: Cross multiply
    13,688.56x = 20,532.84 × 7,841.08
  4. Step 4: Simplify right side
    13,688.56x = 160,999,641.07
  5. Step 5: Solve for x
    x = 160,999,641.07/13,688.56
  6. Step 6: Final answer
    x = 11,761.62

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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.