Home / 39,034.66-53,867.81-21,129.81

Finding the Fourth Proportional to 39,034.66, 53,867.81 and 21,129.81

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Solution

The fourth proportional to 39,034.66, 53,867.81 and 21,129.81 is: 29,159.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,034.66 : 53,867.81 = 21,129.81 : x
  2. Step 2: Convert to fraction form
    39,034.66/53,867.81 = 21,129.81/x
  3. Step 3: Cross multiply
    39,034.66x = 53,867.81 × 21,129.81
  4. Step 4: Simplify right side
    39,034.66x = 1,138,216,590.42
  5. Step 5: Solve for x
    x = 1,138,216,590.42/39,034.66
  6. Step 6: Final answer
    x = 29,159.13

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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.