Home / 11,150.32-15,397.63-7,178.18

Finding the Fourth Proportional to 11,150.32, 15,397.63 and 7,178.18

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Solution

The fourth proportional to 11,150.32, 15,397.63 and 7,178.18 is: 9,912.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,150.32 : 15,397.63 = 7,178.18 : x
  2. Step 2: Convert to fraction form
    11,150.32/15,397.63 = 7,178.18/x
  3. Step 3: Cross multiply
    11,150.32x = 15,397.63 × 7,178.18
  4. Step 4: Simplify right side
    11,150.32x = 110,526,980.26
  5. Step 5: Solve for x
    x = 110,526,980.26/11,150.32
  6. Step 6: Final answer
    x = 9,912.45

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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.