Home / 13,542.62-18,688.25-7,877.53

Finding the Fourth Proportional to 13,542.62, 18,688.25 and 7,877.53

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Solution

The fourth proportional to 13,542.62, 18,688.25 and 7,877.53 is: 10,870.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,542.62 : 18,688.25 = 7,877.53 : x
  2. Step 2: Convert to fraction form
    13,542.62/18,688.25 = 7,877.53/x
  3. Step 3: Cross multiply
    13,542.62x = 18,688.25 × 7,877.53
  4. Step 4: Simplify right side
    13,542.62x = 147,217,156.58
  5. Step 5: Solve for x
    x = 147,217,156.58/13,542.62
  6. Step 6: Final answer
    x = 10,870.66

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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.