Home / 25,445.75-35,115.15-15,509.75

Finding the Fourth Proportional to 25,445.75, 35,115.15 and 15,509.75

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Solution

The fourth proportional to 25,445.75, 35,115.15 and 15,509.75 is: 21,403.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,445.75 : 35,115.15 = 15,509.75 : x
  2. Step 2: Convert to fraction form
    25,445.75/35,115.15 = 15,509.75/x
  3. Step 3: Cross multiply
    25,445.75x = 35,115.15 × 15,509.75
  4. Step 4: Simplify right side
    25,445.75x = 544,627,197.71
  5. Step 5: Solve for x
    x = 544,627,197.71/25,445.75
  6. Step 6: Final answer
    x = 21,403.46

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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.