Home / 31,590.27-43,613.24-21,001.95

Finding the Fourth Proportional to 31,590.27, 43,613.24 and 21,001.95

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Solution

The fourth proportional to 31,590.27, 43,613.24 and 21,001.95 is: 28,995.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,590.27 : 43,613.24 = 21,001.95 : x
  2. Step 2: Convert to fraction form
    31,590.27/43,613.24 = 21,001.95/x
  3. Step 3: Cross multiply
    31,590.27x = 43,613.24 × 21,001.95
  4. Step 4: Simplify right side
    31,590.27x = 915,962,980.81
  5. Step 5: Solve for x
    x = 915,962,980.81/31,590.27
  6. Step 6: Final answer
    x = 28,995.10

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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.