Home / 18,438.08-25,424.42-12,459.38

Finding the Fourth Proportional to 18,438.08, 25,424.42 and 12,459.38

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Solution

The fourth proportional to 18,438.08, 25,424.42 and 12,459.38 is: 17,180.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.08 : 25,424.42 = 12,459.38 : x
  2. Step 2: Convert to fraction form
    18,438.08/25,424.42 = 12,459.38/x
  3. Step 3: Cross multiply
    18,438.08x = 25,424.42 × 12,459.38
  4. Step 4: Simplify right side
    18,438.08x = 316,772,320.64
  5. Step 5: Solve for x
    x = 316,772,320.64/18,438.08
  6. Step 6: Final answer
    x = 17,180.34

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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.