Home / 10,520.28-15,785.28-4,678.56

Finding the Fourth Proportional to 10,520.28, 15,785.28 and 4,678.56

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Solution

The fourth proportional to 10,520.28, 15,785.28 and 4,678.56 is: 7,020.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.28 : 15,785.28 = 4,678.56 : x
  2. Step 2: Convert to fraction form
    10,520.28/15,785.28 = 4,678.56/x
  3. Step 3: Cross multiply
    10,520.28x = 15,785.28 × 4,678.56
  4. Step 4: Simplify right side
    10,520.28x = 73,852,379.60
  5. Step 5: Solve for x
    x = 73,852,379.60/10,520.28
  6. Step 6: Final answer
    x = 7,020.00

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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.