Home / 11,397.87-15,711.81-8,875.53

Finding the Fourth Proportional to 11,397.87, 15,711.81 and 8,875.53

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Solution

The fourth proportional to 11,397.87, 15,711.81 and 8,875.53 is: 12,234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,397.87 : 15,711.81 = 8,875.53 : x
  2. Step 2: Convert to fraction form
    11,397.87/15,711.81 = 8,875.53/x
  3. Step 3: Cross multiply
    11,397.87x = 15,711.81 × 8,875.53
  4. Step 4: Simplify right side
    11,397.87x = 139,450,641.01
  5. Step 5: Solve for x
    x = 139,450,641.01/11,397.87
  6. Step 6: Final answer
    x = 12,234.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.