Home / 28,317.60-42,641.46-20,973.78

Finding the Fourth Proportional to 28,317.60, 42,641.46 and 20,973.78

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Solution

The fourth proportional to 28,317.60, 42,641.46 and 20,973.78 is: 31,582.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,317.60 : 42,641.46 = 20,973.78 : x
  2. Step 2: Convert to fraction form
    28,317.60/42,641.46 = 20,973.78/x
  3. Step 3: Cross multiply
    28,317.60x = 42,641.46 × 20,973.78
  4. Step 4: Simplify right side
    28,317.60x = 894,352,600.92
  5. Step 5: Solve for x
    x = 894,352,600.92/28,317.60
  6. Step 6: Final answer
    x = 31,582.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.