Home / 28,981.40-43,439.70-12,338.60

Finding the Fourth Proportional to 28,981.40, 43,439.70 and 12,338.60

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Solution

The fourth proportional to 28,981.40, 43,439.70 and 12,338.60 is: 18,494.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,981.40 : 43,439.70 = 12,338.60 : x
  2. Step 2: Convert to fraction form
    28,981.40/43,439.70 = 12,338.60/x
  3. Step 3: Cross multiply
    28,981.40x = 43,439.70 × 12,338.60
  4. Step 4: Simplify right side
    28,981.40x = 535,985,082.42
  5. Step 5: Solve for x
    x = 535,985,082.42/28,981.40
  6. Step 6: Final answer
    x = 18,494.11

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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.