Home / 39,401.34-54,378.63-28,785.66

Finding the Fourth Proportional to 39,401.34, 54,378.63 and 28,785.66

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Solution

The fourth proportional to 39,401.34, 54,378.63 and 28,785.66 is: 39,727.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,401.34 : 54,378.63 = 28,785.66 : x
  2. Step 2: Convert to fraction form
    39,401.34/54,378.63 = 28,785.66/x
  3. Step 3: Cross multiply
    39,401.34x = 54,378.63 × 28,785.66
  4. Step 4: Simplify right side
    39,401.34x = 1,565,324,754.45
  5. Step 5: Solve for x
    x = 1,565,324,754.45/39,401.34
  6. Step 6: Final answer
    x = 39,727.70

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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.