Home / 12,309.86-18,474.53-4,520.90

Finding the Fourth Proportional to 12,309.86, 18,474.53 and 4,520.90

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Solution

The fourth proportional to 12,309.86, 18,474.53 and 4,520.90 is: 6,784.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,309.86 : 18,474.53 = 4,520.90 : x
  2. Step 2: Convert to fraction form
    12,309.86/18,474.53 = 4,520.90/x
  3. Step 3: Cross multiply
    12,309.86x = 18,474.53 × 4,520.90
  4. Step 4: Simplify right side
    12,309.86x = 83,521,526.26
  5. Step 5: Solve for x
    x = 83,521,526.26/12,309.86
  6. Step 6: Final answer
    x = 6,784.93

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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.