Home / 28,560.52-42,848.72-11,928.40

Finding the Fourth Proportional to 28,560.52, 42,848.72 and 11,928.40

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Solution

The fourth proportional to 28,560.52, 42,848.72 and 11,928.40 is: 17,895.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.52 : 42,848.72 = 11,928.40 : x
  2. Step 2: Convert to fraction form
    28,560.52/42,848.72 = 11,928.40/x
  3. Step 3: Cross multiply
    28,560.52x = 42,848.72 × 11,928.40
  4. Step 4: Simplify right side
    28,560.52x = 511,116,671.65
  5. Step 5: Solve for x
    x = 511,116,671.65/28,560.52
  6. Step 6: Final answer
    x = 17,895.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.