Home / 28,657.63-42,972.61-12,013.19

Finding the Fourth Proportional to 28,657.63, 42,972.61 and 12,013.19

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Solution

The fourth proportional to 28,657.63, 42,972.61 and 12,013.19 is: 18,013.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.63 : 42,972.61 = 12,013.19 : x
  2. Step 2: Convert to fraction form
    28,657.63/42,972.61 = 12,013.19/x
  3. Step 3: Cross multiply
    28,657.63x = 42,972.61 × 12,013.19
  4. Step 4: Simplify right side
    28,657.63x = 516,238,128.73
  5. Step 5: Solve for x
    x = 516,238,128.73/28,657.63
  6. Step 6: Final answer
    x = 18,013.99

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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.