Home / 27,988.16-38,623.20-15,414.08

Finding the Fourth Proportional to 27,988.16, 38,623.20 and 15,414.08

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Solution

The fourth proportional to 27,988.16, 38,623.20 and 15,414.08 is: 21,271.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,988.16 : 38,623.20 = 15,414.08 : x
  2. Step 2: Convert to fraction form
    27,988.16/38,623.20 = 15,414.08/x
  3. Step 3: Cross multiply
    27,988.16x = 38,623.20 × 15,414.08
  4. Step 4: Simplify right side
    27,988.16x = 595,341,094.66
  5. Step 5: Solve for x
    x = 595,341,094.66/27,988.16
  6. Step 6: Final answer
    x = 21,271.18

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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.