Home / 20,752.65-28,641.11-11,801.50

Finding the Fourth Proportional to 20,752.65, 28,641.11 and 11,801.50

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Solution

The fourth proportional to 20,752.65, 28,641.11 and 11,801.50 is: 16,287.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.65 : 28,641.11 = 11,801.50 : x
  2. Step 2: Convert to fraction form
    20,752.65/28,641.11 = 11,801.50/x
  3. Step 3: Cross multiply
    20,752.65x = 28,641.11 × 11,801.50
  4. Step 4: Simplify right side
    20,752.65x = 338,008,017.57
  5. Step 5: Solve for x
    x = 338,008,017.57/20,752.65
  6. Step 6: Final answer
    x = 16,287.46

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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.