Home / 28,379.53-39,167.51-18,337.18

Finding the Fourth Proportional to 28,379.53, 39,167.51 and 18,337.18

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Solution

The fourth proportional to 28,379.53, 39,167.51 and 18,337.18 is: 25,307.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.53 : 39,167.51 = 18,337.18 : x
  2. Step 2: Convert to fraction form
    28,379.53/39,167.51 = 18,337.18/x
  3. Step 3: Cross multiply
    28,379.53x = 39,167.51 × 18,337.18
  4. Step 4: Simplify right side
    28,379.53x = 718,221,583.63
  5. Step 5: Solve for x
    x = 718,221,583.63/28,379.53
  6. Step 6: Final answer
    x = 25,307.73

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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.