Home / 25,440.12-38,155.80-6,720.36

Finding the Fourth Proportional to 25,440.12, 38,155.80 and 6,720.36

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Solution

The fourth proportional to 25,440.12, 38,155.80 and 6,720.36 is: 10,079.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,440.12 : 38,155.80 = 6,720.36 : x
  2. Step 2: Convert to fraction form
    25,440.12/38,155.80 = 6,720.36/x
  3. Step 3: Cross multiply
    25,440.12x = 38,155.80 × 6,720.36
  4. Step 4: Simplify right side
    25,440.12x = 256,420,712.09
  5. Step 5: Solve for x
    x = 256,420,712.09/25,440.12
  6. Step 6: Final answer
    x = 10,079.38

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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.