Home / 27,987.16-38,622.18-15,411.88

Finding the Fourth Proportional to 27,987.16, 38,622.18 and 15,411.88

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Solution

The fourth proportional to 27,987.16, 38,622.18 and 15,411.88 is: 21,268.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.16 : 38,622.18 = 15,411.88 : x
  2. Step 2: Convert to fraction form
    27,987.16/38,622.18 = 15,411.88/x
  3. Step 3: Cross multiply
    27,987.16x = 38,622.18 × 15,411.88
  4. Step 4: Simplify right side
    27,987.16x = 595,240,403.50
  5. Step 5: Solve for x
    x = 595,240,403.50/27,987.16
  6. Step 6: Final answer
    x = 21,268.34

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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.