Home / 28,341.95-39,112.10-15,766.70

Finding the Fourth Proportional to 28,341.95, 39,112.10 and 15,766.70

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Solution

The fourth proportional to 28,341.95, 39,112.10 and 15,766.70 is: 21,758.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,341.95 : 39,112.10 = 15,766.70 : x
  2. Step 2: Convert to fraction form
    28,341.95/39,112.10 = 15,766.70/x
  3. Step 3: Cross multiply
    28,341.95x = 39,112.10 × 15,766.70
  4. Step 4: Simplify right side
    28,341.95x = 616,668,472.68
  5. Step 5: Solve for x
    x = 616,668,472.68/28,341.95
  6. Step 6: Final answer
    x = 21,758.16

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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.