Home / 25,463.64-35,140.68-15,390.12

Finding the Fourth Proportional to 25,463.64, 35,140.68 and 15,390.12

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Solution

The fourth proportional to 25,463.64, 35,140.68 and 15,390.12 is: 21,238.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,463.64 : 35,140.68 = 15,390.12 : x
  2. Step 2: Convert to fraction form
    25,463.64/35,140.68 = 15,390.12/x
  3. Step 3: Cross multiply
    25,463.64x = 35,140.68 × 15,390.12
  4. Step 4: Simplify right side
    25,463.64x = 540,819,282.08
  5. Step 5: Solve for x
    x = 540,819,282.08/25,463.64
  6. Step 6: Final answer
    x = 21,238.88

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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.