Home / 10,270.43-15,405.65-4,345.78

Finding the Fourth Proportional to 10,270.43, 15,405.65 and 4,345.78

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Solution

The fourth proportional to 10,270.43, 15,405.65 and 4,345.78 is: 6,518.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,270.43 : 15,405.65 = 4,345.78 : x
  2. Step 2: Convert to fraction form
    10,270.43/15,405.65 = 4,345.78/x
  3. Step 3: Cross multiply
    10,270.43x = 15,405.65 × 4,345.78
  4. Step 4: Simplify right side
    10,270.43x = 66,949,565.66
  5. Step 5: Solve for x
    x = 66,949,565.66/10,270.43
  6. Step 6: Final answer
    x = 6,518.67

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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.