Home / 28,947.65-39,941.17-18,331.18

Finding the Fourth Proportional to 28,947.65, 39,941.17 and 18,331.18

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Solution

The fourth proportional to 28,947.65, 39,941.17 and 18,331.18 is: 25,292.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,947.65 : 39,941.17 = 18,331.18 : x
  2. Step 2: Convert to fraction form
    28,947.65/39,941.17 = 18,331.18/x
  3. Step 3: Cross multiply
    28,947.65x = 39,941.17 × 18,331.18
  4. Step 4: Simplify right side
    28,947.65x = 732,168,631.00
  5. Step 5: Solve for x
    x = 732,168,631.00/28,947.65
  6. Step 6: Final answer
    x = 25,292.86

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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.