Home / 31,740.89-43,807.28-20,260.76

Finding the Fourth Proportional to 31,740.89, 43,807.28 and 20,260.76

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Solution

The fourth proportional to 31,740.89, 43,807.28 and 20,260.76 is: 27,962.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,740.89 : 43,807.28 = 20,260.76 : x
  2. Step 2: Convert to fraction form
    31,740.89/43,807.28 = 20,260.76/x
  3. Step 3: Cross multiply
    31,740.89x = 43,807.28 × 20,260.76
  4. Step 4: Simplify right side
    31,740.89x = 887,568,465.99
  5. Step 5: Solve for x
    x = 887,568,465.99/31,740.89
  6. Step 6: Final answer
    x = 27,962.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.