Home / 31,057.87-42,865.93-19,740.55

Finding the Fourth Proportional to 31,057.87, 42,865.93 and 19,740.55

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Solution

The fourth proportional to 31,057.87, 42,865.93 and 19,740.55 is: 27,245.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,057.87 : 42,865.93 = 19,740.55 : x
  2. Step 2: Convert to fraction form
    31,057.87/42,865.93 = 19,740.55/x
  3. Step 3: Cross multiply
    31,057.87x = 42,865.93 × 19,740.55
  4. Step 4: Simplify right side
    31,057.87x = 846,197,034.46
  5. Step 5: Solve for x
    x = 846,197,034.46/31,057.87
  6. Step 6: Final answer
    x = 27,245.82

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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.