Home / 11,222.16-15,489.36-7,643.04

Finding the Fourth Proportional to 11,222.16, 15,489.36 and 7,643.04

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Solution

The fourth proportional to 11,222.16, 15,489.36 and 7,643.04 is: 10,549.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,222.16 : 15,489.36 = 7,643.04 : x
  2. Step 2: Convert to fraction form
    11,222.16/15,489.36 = 7,643.04/x
  3. Step 3: Cross multiply
    11,222.16x = 15,489.36 × 7,643.04
  4. Step 4: Simplify right side
    11,222.16x = 118,385,798.05
  5. Step 5: Solve for x
    x = 118,385,798.05/11,222.16
  6. Step 6: Final answer
    x = 10,549.29

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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.