Home / 31,046.55-42,853.23-20,293.07

Finding the Fourth Proportional to 31,046.55, 42,853.23 and 20,293.07

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Solution

The fourth proportional to 31,046.55, 42,853.23 and 20,293.07 is: 28,010.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,046.55 : 42,853.23 = 20,293.07 : x
  2. Step 2: Convert to fraction form
    31,046.55/42,853.23 = 20,293.07/x
  3. Step 3: Cross multiply
    31,046.55x = 42,853.23 × 20,293.07
  4. Step 4: Simplify right side
    31,046.55x = 869,623,381.85
  5. Step 5: Solve for x
    x = 869,623,381.85/31,046.55
  6. Step 6: Final answer
    x = 28,010.31

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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.