Home / 29,209.26-40,308.75-15,780.51

Finding the Fourth Proportional to 29,209.26, 40,308.75 and 15,780.51

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Solution

The fourth proportional to 29,209.26, 40,308.75 and 15,780.51 is: 21,777.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,209.26 : 40,308.75 = 15,780.51 : x
  2. Step 2: Convert to fraction form
    29,209.26/40,308.75 = 15,780.51/x
  3. Step 3: Cross multiply
    29,209.26x = 40,308.75 × 15,780.51
  4. Step 4: Simplify right side
    29,209.26x = 636,092,632.46
  5. Step 5: Solve for x
    x = 636,092,632.46/29,209.26
  6. Step 6: Final answer
    x = 21,777.09

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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.