Home / 29,209.34-40,308.84-15,780.56

Finding the Fourth Proportional to 29,209.34, 40,308.84 and 15,780.56

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Solution

The fourth proportional to 29,209.34, 40,308.84 and 15,780.56 is: 21,777.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,209.34 : 40,308.84 = 15,780.56 : x
  2. Step 2: Convert to fraction form
    29,209.34/40,308.84 = 15,780.56/x
  3. Step 3: Cross multiply
    29,209.34x = 40,308.84 × 15,780.56
  4. Step 4: Simplify right side
    29,209.34x = 636,095,906.06
  5. Step 5: Solve for x
    x = 636,095,906.06/29,209.34
  6. Step 6: Final answer
    x = 21,777.14

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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.