Home / 14,020.86-19,350.89-8,990.76

Finding the Fourth Proportional to 14,020.86, 19,350.89 and 8,990.76

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Solution

The fourth proportional to 14,020.86, 19,350.89 and 8,990.76 is: 12,408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,020.86 : 19,350.89 = 8,990.76 : x
  2. Step 2: Convert to fraction form
    14,020.86/19,350.89 = 8,990.76/x
  3. Step 3: Cross multiply
    14,020.86x = 19,350.89 × 8,990.76
  4. Step 4: Simplify right side
    14,020.86x = 173,979,269.10
  5. Step 5: Solve for x
    x = 173,979,269.10/14,020.86
  6. Step 6: Final answer
    x = 12,408.60

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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.