Home / 28,979,816.16-39,993,046.32-15,926,837.76

Finding the Fourth Proportional to 28,979,816.16, 39,993,046.32 and 15,926,837.76

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Solution

The fourth proportional to 28,979,816.16, 39,993,046.32 and 15,926,837.76 is: 21,979,530.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979,816.16 : 39,993,046.32 = 15,926,837.76 : x
  2. Step 2: Convert to fraction form
    28,979,816.16/39,993,046.32 = 15,926,837.76/x
  3. Step 3: Cross multiply
    28,979,816.16x = 39,993,046.32 × 15,926,837.76
  4. Step 4: Simplify right side
    28,979,816.16x = 636,962,760,266,805
  5. Step 5: Solve for x
    x = 636,962,760,266,805/28,979,816.16
  6. Step 6: Final answer
    x = 21,979,530.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.