Home / 28,338.39-42,476.39-11,689.31

Finding the Fourth Proportional to 28,338.39, 42,476.39 and 11,689.31

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Solution

The fourth proportional to 28,338.39, 42,476.39 and 11,689.31 is: 17,521.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338.39 : 42,476.39 = 11,689.31 : x
  2. Step 2: Convert to fraction form
    28,338.39/42,476.39 = 11,689.31/x
  3. Step 3: Cross multiply
    28,338.39x = 42,476.39 × 11,689.31
  4. Step 4: Simplify right side
    28,338.39x = 496,519,690.39
  5. Step 5: Solve for x
    x = 496,519,690.39/28,338.39
  6. Step 6: Final answer
    x = 17,521.10

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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.