Home / 25,458.12-35,152.84-15,909.12

Finding the Fourth Proportional to 25,458.12, 35,152.84 and 15,909.12

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Solution

The fourth proportional to 25,458.12, 35,152.84 and 15,909.12 is: 21,967.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,458.12 : 35,152.84 = 15,909.12 : x
  2. Step 2: Convert to fraction form
    25,458.12/35,152.84 = 15,909.12/x
  3. Step 3: Cross multiply
    25,458.12x = 35,152.84 × 15,909.12
  4. Step 4: Simplify right side
    25,458.12x = 559,250,749.90
  5. Step 5: Solve for x
    x = 559,250,749.90/25,458.12
  6. Step 6: Final answer
    x = 21,967.48

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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.