Home / 31,278.15-43,152.01-19,948.07

Finding the Fourth Proportional to 31,278.15, 43,152.01 and 19,948.07

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Solution

The fourth proportional to 31,278.15, 43,152.01 and 19,948.07 is: 27,520.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,278.15 : 43,152.01 = 19,948.07 : x
  2. Step 2: Convert to fraction form
    31,278.15/43,152.01 = 19,948.07/x
  3. Step 3: Cross multiply
    31,278.15x = 43,152.01 × 19,948.07
  4. Step 4: Simplify right side
    31,278.15x = 860,799,374.13
  5. Step 5: Solve for x
    x = 860,799,374.13/31,278.15
  6. Step 6: Final answer
    x = 27,520.79

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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.