Home / 12,721.48-19,089.70-5,325.32

Finding the Fourth Proportional to 12,721.48, 19,089.70 and 5,325.32

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Solution

The fourth proportional to 12,721.48, 19,089.70 and 5,325.32 is: 7,991.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.48 : 19,089.70 = 5,325.32 : x
  2. Step 2: Convert to fraction form
    12,721.48/19,089.70 = 5,325.32/x
  3. Step 3: Cross multiply
    12,721.48x = 19,089.70 × 5,325.32
  4. Step 4: Simplify right side
    12,721.48x = 101,658,761.20
  5. Step 5: Solve for x
    x = 101,658,761.20/12,721.48
  6. Step 6: Final answer
    x = 7,991.11

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1.5x scale

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.