Home / 20,470.61-28,250.00-11,518.43

Finding the Fourth Proportional to 20,470.61, 28,250.00 and 11,518.43

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Solution

The fourth proportional to 20,470.61, 28,250.00 and 11,518.43 is: 15,895.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.61 : 28,250.00 = 11,518.43 : x
  2. Step 2: Convert to fraction form
    20,470.61/28,250.00 = 11,518.43/x
  3. Step 3: Cross multiply
    20,470.61x = 28,250.00 × 11,518.43
  4. Step 4: Simplify right side
    20,470.61x = 325,395,682.13
  5. Step 5: Solve for x
    x = 325,395,682.13/20,470.61
  6. Step 6: Final answer
    x = 15,895.75

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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.