Home / 27,857.95-38,444.08-15,921.69

Finding the Fourth Proportional to 27,857.95, 38,444.08 and 15,921.69

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Solution

The fourth proportional to 27,857.95, 38,444.08 and 15,921.69 is: 21,971.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,857.95 : 38,444.08 = 15,921.69 : x
  2. Step 2: Convert to fraction form
    27,857.95/38,444.08 = 15,921.69/x
  3. Step 3: Cross multiply
    27,857.95x = 38,444.08 × 15,921.69
  4. Step 4: Simplify right side
    27,857.95x = 612,094,724.10
  5. Step 5: Solve for x
    x = 612,094,724.10/27,857.95
  6. Step 6: Final answer
    x = 21,971.99

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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.