Home / 28,365.77-39,143.23-15,616.46

Finding the Fourth Proportional to 28,365.77, 39,143.23 and 15,616.46

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Solution

The fourth proportional to 28,365.77, 39,143.23 and 15,616.46 is: 21,549.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.77 : 39,143.23 = 15,616.46 : x
  2. Step 2: Convert to fraction form
    28,365.77/39,143.23 = 15,616.46/x
  3. Step 3: Cross multiply
    28,365.77x = 39,143.23 × 15,616.46
  4. Step 4: Simplify right side
    28,365.77x = 611,278,744.38
  5. Step 5: Solve for x
    x = 611,278,744.38/28,365.77
  6. Step 6: Final answer
    x = 21,549.87

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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.