Home / 28,422.72-39,226.08-15,848.64

Finding the Fourth Proportional to 28,422.72, 39,226.08 and 15,848.64

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Solution

The fourth proportional to 28,422.72, 39,226.08 and 15,848.64 is: 21,872.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.72 : 39,226.08 = 15,848.64 : x
  2. Step 2: Convert to fraction form
    28,422.72/39,226.08 = 15,848.64/x
  3. Step 3: Cross multiply
    28,422.72x = 39,226.08 × 15,848.64
  4. Step 4: Simplify right side
    28,422.72x = 621,680,020.53
  5. Step 5: Solve for x
    x = 621,680,020.53/28,422.72
  6. Step 6: Final answer
    x = 21,872.64

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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.