Home / 11,043.12-15,243.12-7,070.16

Finding the Fourth Proportional to 11,043.12, 15,243.12 and 7,070.16

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Solution

The fourth proportional to 11,043.12, 15,243.12 and 7,070.16 is: 9,759.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,043.12 : 15,243.12 = 7,070.16 : x
  2. Step 2: Convert to fraction form
    11,043.12/15,243.12 = 7,070.16/x
  3. Step 3: Cross multiply
    11,043.12x = 15,243.12 × 7,070.16
  4. Step 4: Simplify right side
    11,043.12x = 107,771,297.30
  5. Step 5: Solve for x
    x = 107,771,297.30/11,043.12
  6. Step 6: Final answer
    x = 9,759.13

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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.