Home / 18,887.40-28,329.42-6,407.13

Finding the Fourth Proportional to 18,887.40, 28,329.42 and 6,407.13

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Solution

The fourth proportional to 18,887.40, 28,329.42 and 6,407.13 is: 9,610.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.40 : 28,329.42 = 6,407.13 : x
  2. Step 2: Convert to fraction form
    18,887.40/28,329.42 = 6,407.13/x
  3. Step 3: Cross multiply
    18,887.40x = 28,329.42 × 6,407.13
  4. Step 4: Simplify right side
    18,887.40x = 181,510,276.76
  5. Step 5: Solve for x
    x = 181,510,276.76/18,887.40
  6. Step 6: Final answer
    x = 9,610.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.