Home / 20,869.45-28,766.34-16,386.10

Finding the Fourth Proportional to 20,869.45, 28,766.34 and 16,386.10

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Solution

The fourth proportional to 20,869.45, 28,766.34 and 16,386.10 is: 22,586.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,869.45 : 28,766.34 = 16,386.10 : x
  2. Step 2: Convert to fraction form
    20,869.45/28,766.34 = 16,386.10/x
  3. Step 3: Cross multiply
    20,869.45x = 28,766.34 × 16,386.10
  4. Step 4: Simplify right side
    20,869.45x = 471,368,051.96
  5. Step 5: Solve for x
    x = 471,368,051.96/20,869.45
  6. Step 6: Final answer
    x = 22,586.51

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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.