Home / 13,132.50-19,688.31-6,555.12

Finding the Fourth Proportional to 13,132.50, 19,688.31 and 6,555.12

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Solution

The fourth proportional to 13,132.50, 19,688.31 and 6,555.12 is: 9,827.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,132.50 : 19,688.31 = 6,555.12 : x
  2. Step 2: Convert to fraction form
    13,132.50/19,688.31 = 6,555.12/x
  3. Step 3: Cross multiply
    13,132.50x = 19,688.31 × 6,555.12
  4. Step 4: Simplify right side
    13,132.50x = 129,059,234.65
  5. Step 5: Solve for x
    x = 129,059,234.65/13,132.50
  6. Step 6: Final answer
    x = 9,827.47

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Double scale
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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.