Home / 25,431.78-38,154.60-12,284.16

Finding the Fourth Proportional to 25,431.78, 38,154.60 and 12,284.16

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Solution

The fourth proportional to 25,431.78, 38,154.60 and 12,284.16 is: 18,429.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,431.78 : 38,154.60 = 12,284.16 : x
  2. Step 2: Convert to fraction form
    25,431.78/38,154.60 = 12,284.16/x
  3. Step 3: Cross multiply
    25,431.78x = 38,154.60 × 12,284.16
  4. Step 4: Simplify right side
    25,431.78x = 468,697,211.14
  5. Step 5: Solve for x
    x = 468,697,211.14/25,431.78
  6. Step 6: Final answer
    x = 18,429.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.