Home / 10,453.05-15,701.45-8,812.80

Finding the Fourth Proportional to 10,453.05, 15,701.45 and 8,812.80

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Solution

The fourth proportional to 10,453.05, 15,701.45 and 8,812.80 is: 13,237.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,453.05 : 15,701.45 = 8,812.80 : x
  2. Step 2: Convert to fraction form
    10,453.05/15,701.45 = 8,812.80/x
  3. Step 3: Cross multiply
    10,453.05x = 15,701.45 × 8,812.80
  4. Step 4: Simplify right side
    10,453.05x = 138,373,694.50
  5. Step 5: Solve for x
    x = 138,373,694.50/10,453.05
  6. Step 6: Final answer
    x = 13,237.64

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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.