Home / 27,987.70-38,622.14-15,240.53

Finding the Fourth Proportional to 27,987.70, 38,622.14 and 15,240.53

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Solution

The fourth proportional to 27,987.70, 38,622.14 and 15,240.53 is: 21,031.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.70 : 38,622.14 = 15,240.53 : x
  2. Step 2: Convert to fraction form
    27,987.70/38,622.14 = 15,240.53/x
  3. Step 3: Cross multiply
    27,987.70x = 38,622.14 × 15,240.53
  4. Step 4: Simplify right side
    27,987.70x = 588,621,883.33
  5. Step 5: Solve for x
    x = 588,621,883.33/27,987.70
  6. Step 6: Final answer
    x = 21,031.45

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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.