Home / 20,865.91-31,298.91-6,075.18

Finding the Fourth Proportional to 20,865.91, 31,298.91 and 6,075.18

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Solution

The fourth proportional to 20,865.91, 31,298.91 and 6,075.18 is: 9,112.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.91 : 31,298.91 = 6,075.18 : x
  2. Step 2: Convert to fraction form
    20,865.91/31,298.91 = 6,075.18/x
  3. Step 3: Cross multiply
    20,865.91x = 31,298.91 × 6,075.18
  4. Step 4: Simplify right side
    20,865.91x = 190,146,512.05
  5. Step 5: Solve for x
    x = 190,146,512.05/20,865.91
  6. Step 6: Final answer
    x = 9,112.78

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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.