Home / 28,253.78-42,387.66-19,950.08

Finding the Fourth Proportional to 28,253.78, 42,387.66 and 19,950.08

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Solution

The fourth proportional to 28,253.78, 42,387.66 and 19,950.08 is: 29,930.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,253.78 : 42,387.66 = 19,950.08 : x
  2. Step 2: Convert to fraction form
    28,253.78/42,387.66 = 19,950.08/x
  3. Step 3: Cross multiply
    28,253.78x = 42,387.66 × 19,950.08
  4. Step 4: Simplify right side
    28,253.78x = 845,637,208.01
  5. Step 5: Solve for x
    x = 845,637,208.01/28,253.78
  6. Step 6: Final answer
    x = 29,930.06

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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.