Home / 14,650.86-20,218.21-8,685.46

Finding the Fourth Proportional to 14,650.86, 20,218.21 and 8,685.46

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Solution

The fourth proportional to 14,650.86, 20,218.21 and 8,685.46 is: 11,985.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,650.86 : 20,218.21 = 8,685.46 : x
  2. Step 2: Convert to fraction form
    14,650.86/20,218.21 = 8,685.46/x
  3. Step 3: Cross multiply
    14,650.86x = 20,218.21 × 8,685.46
  4. Step 4: Simplify right side
    14,650.86x = 175,604,454.23
  5. Step 5: Solve for x
    x = 175,604,454.23/14,650.86
  6. Step 6: Final answer
    x = 11,985.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.