Home / 9,150.45-12,618.13-7,828.53

Finding the Fourth Proportional to 9,150.45, 12,618.13 and 7,828.53

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Solution

The fourth proportional to 9,150.45, 12,618.13 and 7,828.53 is: 10,795.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,150.45 : 12,618.13 = 7,828.53 : x
  2. Step 2: Convert to fraction form
    9,150.45/12,618.13 = 7,828.53/x
  3. Step 3: Cross multiply
    9,150.45x = 12,618.13 × 7,828.53
  4. Step 4: Simplify right side
    9,150.45x = 98,781,370.11
  5. Step 5: Solve for x
    x = 98,781,370.11/9,150.45
  6. Step 6: Final answer
    x = 10,795.25

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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.