Home / 12,445.12-18,670.29-4,124.65

Finding the Fourth Proportional to 12,445.12, 18,670.29 and 4,124.65

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Solution

The fourth proportional to 12,445.12, 18,670.29 and 4,124.65 is: 6,187.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.12 : 18,670.29 = 4,124.65 : x
  2. Step 2: Convert to fraction form
    12,445.12/18,670.29 = 4,124.65/x
  3. Step 3: Cross multiply
    12,445.12x = 18,670.29 × 4,124.65
  4. Step 4: Simplify right side
    12,445.12x = 77,008,411.65
  5. Step 5: Solve for x
    x = 77,008,411.65/12,445.12
  6. Step 6: Final answer
    x = 6,187.84

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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.