Home / 28,560.14-42,848.96-12,778.45

Finding the Fourth Proportional to 28,560.14, 42,848.96 and 12,778.45

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Solution

The fourth proportional to 28,560.14, 42,848.96 and 12,778.45 is: 19,171.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.14 : 42,848.96 = 12,778.45 : x
  2. Step 2: Convert to fraction form
    28,560.14/42,848.96 = 12,778.45/x
  3. Step 3: Cross multiply
    28,560.14x = 42,848.96 × 12,778.45
  4. Step 4: Simplify right side
    28,560.14x = 547,543,292.91
  5. Step 5: Solve for x
    x = 547,543,292.91/28,560.14
  6. Step 6: Final answer
    x = 19,171.59

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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.