Home / 20,835.20-31,262.72-10,454.24

Finding the Fourth Proportional to 20,835.20, 31,262.72 and 10,454.24

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Solution

The fourth proportional to 20,835.20, 31,262.72 and 10,454.24 is: 15,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.20 : 31,262.72 = 10,454.24 : x
  2. Step 2: Convert to fraction form
    20,835.20/31,262.72 = 10,454.24/x
  3. Step 3: Cross multiply
    20,835.20x = 31,262.72 × 10,454.24
  4. Step 4: Simplify right side
    20,835.20x = 326,827,977.93
  5. Step 5: Solve for x
    x = 326,827,977.93/20,835.20
  6. Step 6: Final answer
    x = 15,686.34

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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.