Home / 27,915.12-38,522.34-15,979.32

Finding the Fourth Proportional to 27,915.12, 38,522.34 and 15,979.32

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Solution

The fourth proportional to 27,915.12, 38,522.34 and 15,979.32 is: 22,051.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,915.12 : 38,522.34 = 15,979.32 : x
  2. Step 2: Convert to fraction form
    27,915.12/38,522.34 = 15,979.32/x
  3. Step 3: Cross multiply
    27,915.12x = 38,522.34 × 15,979.32
  4. Step 4: Simplify right side
    27,915.12x = 615,560,798.01
  5. Step 5: Solve for x
    x = 615,560,798.01/27,915.12
  6. Step 6: Final answer
    x = 22,051.16

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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.