Home / 12,543.71-18,787.81-5,125.67

Finding the Fourth Proportional to 12,543.71, 18,787.81 and 5,125.67

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Solution

The fourth proportional to 12,543.71, 18,787.81 and 5,125.67 is: 7,677.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.71 : 18,787.81 = 5,125.67 : x
  2. Step 2: Convert to fraction form
    12,543.71/18,787.81 = 5,125.67/x
  3. Step 3: Cross multiply
    12,543.71x = 18,787.81 × 5,125.67
  4. Step 4: Simplify right side
    12,543.71x = 96,300,007.33
  5. Step 5: Solve for x
    x = 96,300,007.33/12,543.71
  6. Step 6: Final answer
    x = 7,677.15

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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.