Home / 25,712.10-35,478.95-15,105.15

Finding the Fourth Proportional to 25,712.10, 35,478.95 and 15,105.15

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Solution

The fourth proportional to 25,712.10, 35,478.95 and 15,105.15 is: 20,842.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,712.10 : 35,478.95 = 15,105.15 : x
  2. Step 2: Convert to fraction form
    25,712.10/35,478.95 = 15,105.15/x
  3. Step 3: Cross multiply
    25,712.10x = 35,478.95 × 15,105.15
  4. Step 4: Simplify right side
    25,712.10x = 535,914,786.07
  5. Step 5: Solve for x
    x = 535,914,786.07/25,712.10
  6. Step 6: Final answer
    x = 20,842.90

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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.