Home / 27,987.56-38,621.22-16,807.40

Finding the Fourth Proportional to 27,987.56, 38,621.22 and 16,807.40

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Solution

The fourth proportional to 27,987.56, 38,621.22 and 16,807.40 is: 23,193.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.56 : 38,621.22 = 16,807.40 : x
  2. Step 2: Convert to fraction form
    27,987.56/38,621.22 = 16,807.40/x
  3. Step 3: Cross multiply
    27,987.56x = 38,621.22 × 16,807.40
  4. Step 4: Simplify right side
    27,987.56x = 649,122,293.03
  5. Step 5: Solve for x
    x = 649,122,293.03/27,987.56
  6. Step 6: Final answer
    x = 23,193.24

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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.