Home / 12,487.08-18,730.56-4,165.50

Finding the Fourth Proportional to 12,487.08, 18,730.56 and 4,165.50

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Solution

The fourth proportional to 12,487.08, 18,730.56 and 4,165.50 is: 6,248.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.08 : 18,730.56 = 4,165.50 : x
  2. Step 2: Convert to fraction form
    12,487.08/18,730.56 = 4,165.50/x
  3. Step 3: Cross multiply
    12,487.08x = 18,730.56 × 4,165.50
  4. Step 4: Simplify right side
    12,487.08x = 78,022,147.68
  5. Step 5: Solve for x
    x = 78,022,147.68/12,487.08
  6. Step 6: Final answer
    x = 6,248.23

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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.