Home / 19,987.15-27,581.28-11,483.25

Finding the Fourth Proportional to 19,987.15, 27,581.28 and 11,483.25

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Solution

The fourth proportional to 19,987.15, 27,581.28 and 11,483.25 is: 15,846.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.15 : 27,581.28 = 11,483.25 : x
  2. Step 2: Convert to fraction form
    19,987.15/27,581.28 = 11,483.25/x
  3. Step 3: Cross multiply
    19,987.15x = 27,581.28 × 11,483.25
  4. Step 4: Simplify right side
    19,987.15x = 316,722,733.56
  5. Step 5: Solve for x
    x = 316,722,733.56/19,987.15
  6. Step 6: Final answer
    x = 15,846.32

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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.