Home / 20,868.15-31,302.28-6,077.43

Finding the Fourth Proportional to 20,868.15, 31,302.28 and 6,077.43

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Solution

The fourth proportional to 20,868.15, 31,302.28 and 6,077.43 is: 9,116.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.15 : 31,302.28 = 6,077.43 : x
  2. Step 2: Convert to fraction form
    20,868.15/31,302.28 = 6,077.43/x
  3. Step 3: Cross multiply
    20,868.15x = 31,302.28 × 6,077.43
  4. Step 4: Simplify right side
    20,868.15x = 190,237,423.14
  5. Step 5: Solve for x
    x = 190,237,423.14/20,868.15
  6. Step 6: Final answer
    x = 9,116.16

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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.