Home / 28,017.96-38,669.04-15,921.96

Finding the Fourth Proportional to 28,017.96, 38,669.04 and 15,921.96

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Solution

The fourth proportional to 28,017.96, 38,669.04 and 15,921.96 is: 21,974.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,017.96 : 38,669.04 = 15,921.96 : x
  2. Step 2: Convert to fraction form
    28,017.96/38,669.04 = 15,921.96/x
  3. Step 3: Cross multiply
    28,017.96x = 38,669.04 × 15,921.96
  4. Step 4: Simplify right side
    28,017.96x = 615,686,908.12
  5. Step 5: Solve for x
    x = 615,686,908.12/28,017.96
  6. Step 6: Final answer
    x = 21,974.72

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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.