Home / 13,316.27-18,375.66-7,347.78

Finding the Fourth Proportional to 13,316.27, 18,375.66 and 7,347.78

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Solution

The fourth proportional to 13,316.27, 18,375.66 and 7,347.78 is: 10,139.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.27 : 18,375.66 = 7,347.78 : x
  2. Step 2: Convert to fraction form
    13,316.27/18,375.66 = 7,347.78/x
  3. Step 3: Cross multiply
    13,316.27x = 18,375.66 × 7,347.78
  4. Step 4: Simplify right side
    13,316.27x = 135,020,307.03
  5. Step 5: Solve for x
    x = 135,020,307.03/13,316.27
  6. Step 6: Final answer
    x = 10,139.50

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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.