Home / 28,178.82-42,274.90-9,203.36

Finding the Fourth Proportional to 28,178.82, 42,274.90 and 9,203.36

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Solution

The fourth proportional to 28,178.82, 42,274.90 and 9,203.36 is: 13,807.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178.82 : 42,274.90 = 9,203.36 : x
  2. Step 2: Convert to fraction form
    28,178.82/42,274.90 = 9,203.36/x
  3. Step 3: Cross multiply
    28,178.82x = 42,274.90 × 9,203.36
  4. Step 4: Simplify right side
    28,178.82x = 389,071,123.66
  5. Step 5: Solve for x
    x = 389,071,123.66/28,178.82
  6. Step 6: Final answer
    x = 13,807.22

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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.