Home / 11,987.38-17,889.53-10,675.18

Finding the Fourth Proportional to 11,987.38, 17,889.53 and 10,675.18

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Solution

The fourth proportional to 11,987.38, 17,889.53 and 10,675.18 is: 15,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.38 : 17,889.53 = 10,675.18 : x
  2. Step 2: Convert to fraction form
    11,987.38/17,889.53 = 10,675.18/x
  3. Step 3: Cross multiply
    11,987.38x = 17,889.53 × 10,675.18
  4. Step 4: Simplify right side
    11,987.38x = 190,973,952.87
  5. Step 5: Solve for x
    x = 190,973,952.87/11,987.38
  6. Step 6: Final answer
    x = 15,931.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.