Home / 28,102.95-42,156.81-11,464.11

Finding the Fourth Proportional to 28,102.95, 42,156.81 and 11,464.11

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Solution

The fourth proportional to 28,102.95, 42,156.81 and 11,464.11 is: 17,197.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.95 : 42,156.81 = 11,464.11 : x
  2. Step 2: Convert to fraction form
    28,102.95/42,156.81 = 11,464.11/x
  3. Step 3: Cross multiply
    28,102.95x = 42,156.81 × 11,464.11
  4. Step 4: Simplify right side
    28,102.95x = 483,290,307.09
  5. Step 5: Solve for x
    x = 483,290,307.09/28,102.95
  6. Step 6: Final answer
    x = 17,197.14

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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.