Home / 28,605.77-39,478.29-15,862.95

Finding the Fourth Proportional to 28,605.77, 39,478.29 and 15,862.95

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Solution

The fourth proportional to 28,605.77, 39,478.29 and 15,862.95 is: 21,892.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,605.77 : 39,478.29 = 15,862.95 : x
  2. Step 2: Convert to fraction form
    28,605.77/39,478.29 = 15,862.95/x
  3. Step 3: Cross multiply
    28,605.77x = 39,478.29 × 15,862.95
  4. Step 4: Simplify right side
    28,605.77x = 626,241,863.65
  5. Step 5: Solve for x
    x = 626,241,863.65/28,605.77
  6. Step 6: Final answer
    x = 21,892.16

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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.