Home / 39,756.75-54,863.08-21,851.70

Finding the Fourth Proportional to 39,756.75, 54,863.08 and 21,851.70

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Solution

The fourth proportional to 39,756.75, 54,863.08 and 21,851.70 is: 30,154.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.75 : 54,863.08 = 21,851.70 : x
  2. Step 2: Convert to fraction form
    39,756.75/54,863.08 = 21,851.70/x
  3. Step 3: Cross multiply
    39,756.75x = 54,863.08 × 21,851.70
  4. Step 4: Simplify right side
    39,756.75x = 1,198,851,565.24
  5. Step 5: Solve for x
    x = 1,198,851,565.24/39,756.75
  6. Step 6: Final answer
    x = 30,154.67

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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.