Home / 12,487.11-18,728.47-4,166.16

Finding the Fourth Proportional to 12,487.11, 18,728.47 and 4,166.16

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Solution

The fourth proportional to 12,487.11, 18,728.47 and 4,166.16 is: 6,248.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.11 : 18,728.47 = 4,166.16 : x
  2. Step 2: Convert to fraction form
    12,487.11/18,728.47 = 4,166.16/x
  3. Step 3: Cross multiply
    12,487.11x = 18,728.47 × 4,166.16
  4. Step 4: Simplify right side
    12,487.11x = 78,025,802.58
  5. Step 5: Solve for x
    x = 78,025,802.58/12,487.11
  6. Step 6: Final answer
    x = 6,248.51

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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.