Home / 25,630.76-35,370.48-15,020.40

Finding the Fourth Proportional to 25,630.76, 35,370.48 and 15,020.40

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Solution

The fourth proportional to 25,630.76, 35,370.48 and 15,020.40 is: 20,728.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,630.76 : 35,370.48 = 15,020.40 : x
  2. Step 2: Convert to fraction form
    25,630.76/35,370.48 = 15,020.40/x
  3. Step 3: Cross multiply
    25,630.76x = 35,370.48 × 15,020.40
  4. Step 4: Simplify right side
    25,630.76x = 531,278,757.79
  5. Step 5: Solve for x
    x = 531,278,757.79/25,630.76
  6. Step 6: Final answer
    x = 20,728.17

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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.