Home / 15,643.80-21,588.89-9,511.49

Finding the Fourth Proportional to 15,643.80, 21,588.89 and 9,511.49

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Solution

The fourth proportional to 15,643.80, 21,588.89 and 9,511.49 is: 13,126.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,643.80 : 21,588.89 = 9,511.49 : x
  2. Step 2: Convert to fraction form
    15,643.80/21,588.89 = 9,511.49/x
  3. Step 3: Cross multiply
    15,643.80x = 21,588.89 × 9,511.49
  4. Step 4: Simplify right side
    15,643.80x = 205,342,517.76
  5. Step 5: Solve for x
    x = 205,342,517.76/15,643.80
  6. Step 6: Final answer
    x = 13,126.13

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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.