Home / 10,887.55-15,020.48-7,109.51

Finding the Fourth Proportional to 10,887.55, 15,020.48 and 7,109.51

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Solution

The fourth proportional to 10,887.55, 15,020.48 and 7,109.51 is: 9,808.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.55 : 15,020.48 = 7,109.51 : x
  2. Step 2: Convert to fraction form
    10,887.55/15,020.48 = 7,109.51/x
  3. Step 3: Cross multiply
    10,887.55x = 15,020.48 × 7,109.51
  4. Step 4: Simplify right side
    10,887.55x = 106,788,195.44
  5. Step 5: Solve for x
    x = 106,788,195.44/10,887.55
  6. Step 6: Final answer
    x = 9,808.29

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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.