Home / 28,034.10-42,051.15-20,160.90

Finding the Fourth Proportional to 28,034.10, 42,051.15 and 20,160.90

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Solution

The fourth proportional to 28,034.10, 42,051.15 and 20,160.90 is: 30,241.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,034.10 : 42,051.15 = 20,160.90 : x
  2. Step 2: Convert to fraction form
    28,034.10/42,051.15 = 20,160.90/x
  3. Step 3: Cross multiply
    28,034.10x = 42,051.15 × 20,160.90
  4. Step 4: Simplify right side
    28,034.10x = 847,789,030.04
  5. Step 5: Solve for x
    x = 847,789,030.04/28,034.10
  6. Step 6: Final answer
    x = 30,241.35

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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.