Home / 20,401.76-30,578.02-10,535.64

Finding the Fourth Proportional to 20,401.76, 30,578.02 and 10,535.64

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Solution

The fourth proportional to 20,401.76, 30,578.02 and 10,535.64 is: 15,790.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.76 : 30,578.02 = 10,535.64 : x
  2. Step 2: Convert to fraction form
    20,401.76/30,578.02 = 10,535.64/x
  3. Step 3: Cross multiply
    20,401.76x = 30,578.02 × 10,535.64
  4. Step 4: Simplify right side
    20,401.76x = 322,158,984.29
  5. Step 5: Solve for x
    x = 322,158,984.29/20,401.76
  6. Step 6: Final answer
    x = 15,790.75

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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.