Home / 12,302.42-18,437.12-5,639.56

Finding the Fourth Proportional to 12,302.42, 18,437.12 and 5,639.56

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Solution

The fourth proportional to 12,302.42, 18,437.12 and 5,639.56 is: 8,451.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,302.42 : 18,437.12 = 5,639.56 : x
  2. Step 2: Convert to fraction form
    12,302.42/18,437.12 = 5,639.56/x
  3. Step 3: Cross multiply
    12,302.42x = 18,437.12 × 5,639.56
  4. Step 4: Simplify right side
    12,302.42x = 103,977,191.32
  5. Step 5: Solve for x
    x = 103,977,191.32/12,302.42
  6. Step 6: Final answer
    x = 8,451.77

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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.