Home / 21,111.11-31,667.06-7,068.52

Finding the Fourth Proportional to 21,111.11, 31,667.06 and 7,068.52

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Solution

The fourth proportional to 21,111.11, 31,667.06 and 7,068.52 is: 10,602.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,111.11 : 31,667.06 = 7,068.52 : x
  2. Step 2: Convert to fraction form
    21,111.11/31,667.06 = 7,068.52/x
  3. Step 3: Cross multiply
    21,111.11x = 31,667.06 × 7,068.52
  4. Step 4: Simplify right side
    21,111.11x = 223,839,246.95
  5. Step 5: Solve for x
    x = 223,839,246.95/21,111.11
  6. Step 6: Final answer
    x = 10,602.91

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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.