Home / 39,656.31-54,726.13-21,507.07

Finding the Fourth Proportional to 39,656.31, 54,726.13 and 21,507.07

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Solution

The fourth proportional to 39,656.31, 54,726.13 and 21,507.07 is: 29,679.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,656.31 : 54,726.13 = 21,507.07 : x
  2. Step 2: Convert to fraction form
    39,656.31/54,726.13 = 21,507.07/x
  3. Step 3: Cross multiply
    39,656.31x = 54,726.13 × 21,507.07
  4. Step 4: Simplify right side
    39,656.31x = 1,176,998,708.74
  5. Step 5: Solve for x
    x = 1,176,998,708.74/39,656.31
  6. Step 6: Final answer
    x = 29,679.99

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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.