Home / 10,343.40-15,520.50-9,785.76

Finding the Fourth Proportional to 10,343.40, 15,520.50 and 9,785.76

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Solution

The fourth proportional to 10,343.40, 15,520.50 and 9,785.76 is: 14,683.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,343.40 : 15,520.50 = 9,785.76 : x
  2. Step 2: Convert to fraction form
    10,343.40/15,520.50 = 9,785.76/x
  3. Step 3: Cross multiply
    10,343.40x = 15,520.50 × 9,785.76
  4. Step 4: Simplify right side
    10,343.40x = 151,879,888.08
  5. Step 5: Solve for x
    x = 151,879,888.08/10,343.40
  6. Step 6: Final answer
    x = 14,683.75

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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.