Home / 25,540.16-35,242.88-15,978.20

Finding the Fourth Proportional to 25,540.16, 35,242.88 and 15,978.20

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Solution

The fourth proportional to 25,540.16, 35,242.88 and 15,978.20 is: 22,048.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,540.16 : 35,242.88 = 15,978.20 : x
  2. Step 2: Convert to fraction form
    25,540.16/35,242.88 = 15,978.20/x
  3. Step 3: Cross multiply
    25,540.16x = 35,242.88 × 15,978.20
  4. Step 4: Simplify right side
    25,540.16x = 563,117,785.22
  5. Step 5: Solve for x
    x = 563,117,785.22/25,540.16
  6. Step 6: Final answer
    x = 22,048.33

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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.