Home / 13,987.05-19,293.69-8,610.40

Finding the Fourth Proportional to 13,987.05, 19,293.69 and 8,610.40

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Solution

The fourth proportional to 13,987.05, 19,293.69 and 8,610.40 is: 11,877.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.05 : 19,293.69 = 8,610.40 : x
  2. Step 2: Convert to fraction form
    13,987.05/19,293.69 = 8,610.40/x
  3. Step 3: Cross multiply
    13,987.05x = 19,293.69 × 8,610.40
  4. Step 4: Simplify right side
    13,987.05x = 166,126,388.38
  5. Step 5: Solve for x
    x = 166,126,388.38/13,987.05
  6. Step 6: Final answer
    x = 11,877.16

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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.