Home / 43,864.88-65,807.04-20,478.56

Finding the Fourth Proportional to 43,864.88, 65,807.04 and 20,478.56

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Solution

The fourth proportional to 43,864.88, 65,807.04 and 20,478.56 is: 30,722.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,864.88 : 65,807.04 = 20,478.56 : x
  2. Step 2: Convert to fraction form
    43,864.88/65,807.04 = 20,478.56/x
  3. Step 3: Cross multiply
    43,864.88x = 65,807.04 × 20,478.56
  4. Step 4: Simplify right side
    43,864.88x = 1,347,633,417.06
  5. Step 5: Solve for x
    x = 1,347,633,417.06/43,864.88
  6. Step 6: Final answer
    x = 30,722.38

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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.