Home / 30,152.76-45,228.60-12,379.56

Finding the Fourth Proportional to 30,152.76, 45,228.60 and 12,379.56

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Solution

The fourth proportional to 30,152.76, 45,228.60 and 12,379.56 is: 18,569.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,152.76 : 45,228.60 = 12,379.56 : x
  2. Step 2: Convert to fraction form
    30,152.76/45,228.60 = 12,379.56/x
  3. Step 3: Cross multiply
    30,152.76x = 45,228.60 × 12,379.56
  4. Step 4: Simplify right side
    30,152.76x = 559,910,167.42
  5. Step 5: Solve for x
    x = 559,910,167.42/30,152.76
  6. Step 6: Final answer
    x = 18,569.12

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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.