Home / 20,686.74-31,049.55-10,833.09

Finding the Fourth Proportional to 20,686.74, 31,049.55 and 10,833.09

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Solution

The fourth proportional to 20,686.74, 31,049.55 and 10,833.09 is: 16,259.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.74 : 31,049.55 = 10,833.09 : x
  2. Step 2: Convert to fraction form
    20,686.74/31,049.55 = 10,833.09/x
  3. Step 3: Cross multiply
    20,686.74x = 31,049.55 × 10,833.09
  4. Step 4: Simplify right side
    20,686.74x = 336,362,569.61
  5. Step 5: Solve for x
    x = 336,362,569.61/20,686.74
  6. Step 6: Final answer
    x = 16,259.82

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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.