Home / 20,867.70-28,801.65-14,151.54

Finding the Fourth Proportional to 20,867.70, 28,801.65 and 14,151.54

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Solution

The fourth proportional to 20,867.70, 28,801.65 and 14,151.54 is: 19,531.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.70 : 28,801.65 = 14,151.54 : x
  2. Step 2: Convert to fraction form
    20,867.70/28,801.65 = 14,151.54/x
  3. Step 3: Cross multiply
    20,867.70x = 28,801.65 × 14,151.54
  4. Step 4: Simplify right side
    20,867.70x = 407,587,702.04
  5. Step 5: Solve for x
    x = 407,587,702.04/20,867.70
  6. Step 6: Final answer
    x = 19,531.99

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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.