Home / 21,069.57-29,077.86-11,639.96

Finding the Fourth Proportional to 21,069.57, 29,077.86 and 11,639.96

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Solution

The fourth proportional to 21,069.57, 29,077.86 and 11,639.96 is: 16,064.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.57 : 29,077.86 = 11,639.96 : x
  2. Step 2: Convert to fraction form
    21,069.57/29,077.86 = 11,639.96/x
  3. Step 3: Cross multiply
    21,069.57x = 29,077.86 × 11,639.96
  4. Step 4: Simplify right side
    21,069.57x = 338,465,127.29
  5. Step 5: Solve for x
    x = 338,465,127.29/21,069.57
  6. Step 6: Final answer
    x = 16,064.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.