Home / 28,305.20-42,461.85-8,585.30

Finding the Fourth Proportional to 28,305.20, 42,461.85 and 8,585.30

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Solution

The fourth proportional to 28,305.20, 42,461.85 and 8,585.30 is: 12,879.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.20 : 42,461.85 = 8,585.30 : x
  2. Step 2: Convert to fraction form
    28,305.20/42,461.85 = 8,585.30/x
  3. Step 3: Cross multiply
    28,305.20x = 42,461.85 × 8,585.30
  4. Step 4: Simplify right side
    28,305.20x = 364,547,720.81
  5. Step 5: Solve for x
    x = 364,547,720.81/28,305.20
  6. Step 6: Final answer
    x = 12,879.18

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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.