Home / 13,437.05-18,543.11-7,469.28

Finding the Fourth Proportional to 13,437.05, 18,543.11 and 7,469.28

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Solution

The fourth proportional to 13,437.05, 18,543.11 and 7,469.28 is: 10,307.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.05 : 18,543.11 = 7,469.28 : x
  2. Step 2: Convert to fraction form
    13,437.05/18,543.11 = 7,469.28/x
  3. Step 3: Cross multiply
    13,437.05x = 18,543.11 × 7,469.28
  4. Step 4: Simplify right side
    13,437.05x = 138,503,587.95
  5. Step 5: Solve for x
    x = 138,503,587.95/13,437.05
  6. Step 6: Final answer
    x = 10,307.59

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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.