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Finding the Fourth Proportional to 8,557.80, 11,721.13 and 8,053.35

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Solution

The fourth proportional to 8,557.80, 11,721.13 and 8,053.35 is: 11,030.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,557.80 : 11,721.13 = 8,053.35 : x
  2. Step 2: Convert to fraction form
    8,557.80/11,721.13 = 8,053.35/x
  3. Step 3: Cross multiply
    8,557.80x = 11,721.13 × 8,053.35
  4. Step 4: Simplify right side
    8,557.80x = 94,394,362.29
  5. Step 5: Solve for x
    x = 94,394,362.29/8,557.80
  6. Step 6: Final answer
    x = 11,030.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.