Home / 28,439.58-42,667.56-8,721.03

Finding the Fourth Proportional to 28,439.58, 42,667.56 and 8,721.03

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Solution

The fourth proportional to 28,439.58, 42,667.56 and 8,721.03 is: 13,084.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,439.58 : 42,667.56 = 8,721.03 : x
  2. Step 2: Convert to fraction form
    28,439.58/42,667.56 = 8,721.03/x
  3. Step 3: Cross multiply
    28,439.58x = 42,667.56 × 8,721.03
  4. Step 4: Simplify right side
    28,439.58x = 372,105,070.79
  5. Step 5: Solve for x
    x = 372,105,070.79/28,439.58
  6. Step 6: Final answer
    x = 13,084.06

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1.5x scale

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.