Home / 37,379.28-56,068.72-12,421.20

Finding the Fourth Proportional to 37,379.28, 56,068.72 and 12,421.20

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Solution

The fourth proportional to 37,379.28, 56,068.72 and 12,421.20 is: 18,631.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,379.28 : 56,068.72 = 12,421.20 : x
  2. Step 2: Convert to fraction form
    37,379.28/56,068.72 = 12,421.20/x
  3. Step 3: Cross multiply
    37,379.28x = 56,068.72 × 12,421.20
  4. Step 4: Simplify right side
    37,379.28x = 696,440,784.86
  5. Step 5: Solve for x
    x = 696,440,784.86/37,379.28
  6. Step 6: Final answer
    x = 18,631.73

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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.