Home / 25,720.96-35,480.16-15,108.64

Finding the Fourth Proportional to 25,720.96, 35,480.16 and 15,108.64

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Solution

The fourth proportional to 25,720.96, 35,480.16 and 15,108.64 is: 20,841.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,720.96 : 35,480.16 = 15,108.64 : x
  2. Step 2: Convert to fraction form
    25,720.96/35,480.16 = 15,108.64/x
  3. Step 3: Cross multiply
    25,720.96x = 35,480.16 × 15,108.64
  4. Step 4: Simplify right side
    25,720.96x = 536,056,964.58
  5. Step 5: Solve for x
    x = 536,056,964.58/25,720.96
  6. Step 6: Final answer
    x = 20,841.25

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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.