Home / 28,551.71-42,836.33-12,770.02

Finding the Fourth Proportional to 28,551.71, 42,836.33 and 12,770.02

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Solution

The fourth proportional to 28,551.71, 42,836.33 and 12,770.02 is: 19,158.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,551.71 : 42,836.33 = 12,770.02 : x
  2. Step 2: Convert to fraction form
    28,551.71/42,836.33 = 12,770.02/x
  3. Step 3: Cross multiply
    28,551.71x = 42,836.33 × 12,770.02
  4. Step 4: Simplify right side
    28,551.71x = 547,020,619.89
  5. Step 5: Solve for x
    x = 547,020,619.89/28,551.71
  6. Step 6: Final answer
    x = 19,158.94

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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.