Home / 20,545.18-28,352.37-12,994.77

Finding the Fourth Proportional to 20,545.18, 28,352.37 and 12,994.77

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Solution

The fourth proportional to 20,545.18, 28,352.37 and 12,994.77 is: 17,932.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.18 : 28,352.37 = 12,994.77 : x
  2. Step 2: Convert to fraction form
    20,545.18/28,352.37 = 12,994.77/x
  3. Step 3: Cross multiply
    20,545.18x = 28,352.37 × 12,994.77
  4. Step 4: Simplify right side
    20,545.18x = 368,432,527.10
  5. Step 5: Solve for x
    x = 368,432,527.10/20,545.18
  6. Step 6: Final answer
    x = 17,932.80

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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.