Home / 28,576.87-42,881.50-15,428.95

Finding the Fourth Proportional to 28,576.87, 42,881.50 and 15,428.95

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Solution

The fourth proportional to 28,576.87, 42,881.50 and 15,428.95 is: 23,152.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,576.87 : 42,881.50 = 15,428.95 : x
  2. Step 2: Convert to fraction form
    28,576.87/42,881.50 = 15,428.95/x
  3. Step 3: Cross multiply
    28,576.87x = 42,881.50 × 15,428.95
  4. Step 4: Simplify right side
    28,576.87x = 661,616,519.43
  5. Step 5: Solve for x
    x = 661,616,519.43/28,576.87
  6. Step 6: Final answer
    x = 23,152.17

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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.