Home / 28,387.78-42,581.67-10,862.98

Finding the Fourth Proportional to 28,387.78, 42,581.67 and 10,862.98

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Solution

The fourth proportional to 28,387.78, 42,581.67 and 10,862.98 is: 16,294.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,387.78 : 42,581.67 = 10,862.98 : x
  2. Step 2: Convert to fraction form
    28,387.78/42,581.67 = 10,862.98/x
  3. Step 3: Cross multiply
    28,387.78x = 42,581.67 × 10,862.98
  4. Step 4: Simplify right side
    28,387.78x = 462,563,829.58
  5. Step 5: Solve for x
    x = 462,563,829.58/28,387.78
  6. Step 6: Final answer
    x = 16,294.47

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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.