Home / 25,319.68-34,942.72-13,989.12

Finding the Fourth Proportional to 25,319.68, 34,942.72 and 13,989.12

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Solution

The fourth proportional to 25,319.68, 34,942.72 and 13,989.12 is: 19,305.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,319.68 : 34,942.72 = 13,989.12 : x
  2. Step 2: Convert to fraction form
    25,319.68/34,942.72 = 13,989.12/x
  3. Step 3: Cross multiply
    25,319.68x = 34,942.72 × 13,989.12
  4. Step 4: Simplify right side
    25,319.68x = 488,817,903.21
  5. Step 5: Solve for x
    x = 488,817,903.21/25,319.68
  6. Step 6: Final answer
    x = 19,305.85

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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.