Home / 28,443.87-42,672.64-10,913.70

Finding the Fourth Proportional to 28,443.87, 42,672.64 and 10,913.70

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Solution

The fourth proportional to 28,443.87, 42,672.64 and 10,913.70 is: 16,373.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,443.87 : 42,672.64 = 10,913.70 : x
  2. Step 2: Convert to fraction form
    28,443.87/42,672.64 = 10,913.70/x
  3. Step 3: Cross multiply
    28,443.87x = 42,672.64 × 10,913.70
  4. Step 4: Simplify right side
    28,443.87x = 465,716,184.32
  5. Step 5: Solve for x
    x = 465,716,184.32/28,443.87
  6. Step 6: Final answer
    x = 16,373.17

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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.