Home / 27,687.90-38,210.15-15,752.95

Finding the Fourth Proportional to 27,687.90, 38,210.15 and 15,752.95

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Solution

The fourth proportional to 27,687.90, 38,210.15 and 15,752.95 is: 21,739.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,687.90 : 38,210.15 = 15,752.95 : x
  2. Step 2: Convert to fraction form
    27,687.90/38,210.15 = 15,752.95/x
  3. Step 3: Cross multiply
    27,687.90x = 38,210.15 × 15,752.95
  4. Step 4: Simplify right side
    27,687.90x = 601,922,503.68
  5. Step 5: Solve for x
    x = 601,922,503.68/27,687.90
  6. Step 6: Final answer
    x = 21,739.55

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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.