Home / 25,780.22-38,664.75-9,140.79

Finding the Fourth Proportional to 25,780.22, 38,664.75 and 9,140.79

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Solution

The fourth proportional to 25,780.22, 38,664.75 and 9,140.79 is: 13,709.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,780.22 : 38,664.75 = 9,140.79 : x
  2. Step 2: Convert to fraction form
    25,780.22/38,664.75 = 9,140.79/x
  3. Step 3: Cross multiply
    25,780.22x = 38,664.75 × 9,140.79
  4. Step 4: Simplify right side
    25,780.22x = 353,426,360.15
  5. Step 5: Solve for x
    x = 353,426,360.15/25,780.22
  6. Step 6: Final answer
    x = 13,709.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.