Home / 11,443.56-15,792.12-6,407.78

Finding the Fourth Proportional to 11,443.56, 15,792.12 and 6,407.78

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Solution

The fourth proportional to 11,443.56, 15,792.12 and 6,407.78 is: 8,842.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,443.56 : 15,792.12 = 6,407.78 : x
  2. Step 2: Convert to fraction form
    11,443.56/15,792.12 = 6,407.78/x
  3. Step 3: Cross multiply
    11,443.56x = 15,792.12 × 6,407.78
  4. Step 4: Simplify right side
    11,443.56x = 101,192,430.69
  5. Step 5: Solve for x
    x = 101,192,430.69/11,443.56
  6. Step 6: Final answer
    x = 8,842.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.