Home / 39,708.18-54,794.80-21,803.10

Finding the Fourth Proportional to 39,708.18, 54,794.80 and 21,803.10

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Solution

The fourth proportional to 39,708.18, 54,794.80 and 21,803.10 is: 30,086.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,708.18 : 54,794.80 = 21,803.10 : x
  2. Step 2: Convert to fraction form
    39,708.18/54,794.80 = 21,803.10/x
  3. Step 3: Cross multiply
    39,708.18x = 54,794.80 × 21,803.10
  4. Step 4: Simplify right side
    39,708.18x = 1,194,696,503.88
  5. Step 5: Solve for x
    x = 1,194,696,503.88/39,708.18
  6. Step 6: Final answer
    x = 30,086.91

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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.