Home / 31,668.66-43,702.47-18,921.15

Finding the Fourth Proportional to 31,668.66, 43,702.47 and 18,921.15

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Solution

The fourth proportional to 31,668.66, 43,702.47 and 18,921.15 is: 26,111.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,668.66 : 43,702.47 = 18,921.15 : x
  2. Step 2: Convert to fraction form
    31,668.66/43,702.47 = 18,921.15/x
  3. Step 3: Cross multiply
    31,668.66x = 43,702.47 × 18,921.15
  4. Step 4: Simplify right side
    31,668.66x = 826,900,990.24
  5. Step 5: Solve for x
    x = 826,900,990.24/31,668.66
  6. Step 6: Final answer
    x = 26,111.02

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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.