Home / 10,222.80-15,334.20-9,785.40

Finding the Fourth Proportional to 10,222.80, 15,334.20 and 9,785.40

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Solution

The fourth proportional to 10,222.80, 15,334.20 and 9,785.40 is: 14,678.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,222.80 : 15,334.20 = 9,785.40 : x
  2. Step 2: Convert to fraction form
    10,222.80/15,334.20 = 9,785.40/x
  3. Step 3: Cross multiply
    10,222.80x = 15,334.20 × 9,785.40
  4. Step 4: Simplify right side
    10,222.80x = 150,051,280.68
  5. Step 5: Solve for x
    x = 150,051,280.68/10,222.80
  6. Step 6: Final answer
    x = 14,678.10

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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.