Home / 12,637.86-18,959.04-4,318.80

Finding the Fourth Proportional to 12,637.86, 18,959.04 and 4,318.80

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Solution

The fourth proportional to 12,637.86, 18,959.04 and 4,318.80 is: 6,478.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,637.86 : 18,959.04 = 4,318.80 : x
  2. Step 2: Convert to fraction form
    12,637.86/18,959.04 = 4,318.80/x
  3. Step 3: Cross multiply
    12,637.86x = 18,959.04 × 4,318.80
  4. Step 4: Simplify right side
    12,637.86x = 81,880,301.95
  5. Step 5: Solve for x
    x = 81,880,301.95/12,637.86
  6. Step 6: Final answer
    x = 6,478.97

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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.