Home / 13,381.49-18,465.66-7,330.53

Finding the Fourth Proportional to 13,381.49, 18,465.66 and 7,330.53

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Solution

The fourth proportional to 13,381.49, 18,465.66 and 7,330.53 is: 10,115.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.49 : 18,465.66 = 7,330.53 : x
  2. Step 2: Convert to fraction form
    13,381.49/18,465.66 = 7,330.53/x
  3. Step 3: Cross multiply
    13,381.49x = 18,465.66 × 7,330.53
  4. Step 4: Simplify right side
    13,381.49x = 135,363,000.60
  5. Step 5: Solve for x
    x = 135,363,000.60/13,381.49
  6. Step 6: Final answer
    x = 10,115.69

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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.