Home / 28,875.12-39,839.76-18,269.16

Finding the Fourth Proportional to 28,875.12, 39,839.76 and 18,269.16

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Solution

The fourth proportional to 28,875.12, 39,839.76 and 18,269.16 is: 25,206.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,875.12 : 39,839.76 = 18,269.16 : x
  2. Step 2: Convert to fraction form
    28,875.12/39,839.76 = 18,269.16/x
  3. Step 3: Cross multiply
    28,875.12x = 39,839.76 × 18,269.16
  4. Step 4: Simplify right side
    28,875.12x = 727,838,949.80
  5. Step 5: Solve for x
    x = 727,838,949.80/28,875.12
  6. Step 6: Final answer
    x = 25,206.44

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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.