Home / 28,368.11-42,558.97-8,645.46

Finding the Fourth Proportional to 28,368.11, 42,558.97 and 8,645.46

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Solution

The fourth proportional to 28,368.11, 42,558.97 and 8,645.46 is: 12,970.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,368.11 : 42,558.97 = 8,645.46 : x
  2. Step 2: Convert to fraction form
    28,368.11/42,558.97 = 8,645.46/x
  3. Step 3: Cross multiply
    28,368.11x = 42,558.97 × 8,645.46
  4. Step 4: Simplify right side
    28,368.11x = 367,941,872.78
  5. Step 5: Solve for x
    x = 367,941,872.78/28,368.11
  6. Step 6: Final answer
    x = 12,970.26

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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.