Home / 12,721.68-19,061.40-9,005.52

Finding the Fourth Proportional to 12,721.68, 19,061.40 and 9,005.52

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Solution

The fourth proportional to 12,721.68, 19,061.40 and 9,005.52 is: 13,493.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.68 : 19,061.40 = 9,005.52 : x
  2. Step 2: Convert to fraction form
    12,721.68/19,061.40 = 9,005.52/x
  3. Step 3: Cross multiply
    12,721.68x = 19,061.40 × 9,005.52
  4. Step 4: Simplify right side
    12,721.68x = 171,657,818.93
  5. Step 5: Solve for x
    x = 171,657,818.93/12,721.68
  6. Step 6: Final answer
    x = 13,493.33

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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.