Home / 12,717.51-19,069.61-5,320.59

Finding the Fourth Proportional to 12,717.51, 19,069.61 and 5,320.59

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Solution

The fourth proportional to 12,717.51, 19,069.61 and 5,320.59 is: 7,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,717.51 : 19,069.61 = 5,320.59 : x
  2. Step 2: Convert to fraction form
    12,717.51/19,069.61 = 5,320.59/x
  3. Step 3: Cross multiply
    12,717.51x = 19,069.61 × 5,320.59
  4. Step 4: Simplify right side
    12,717.51x = 101,461,549.67
  5. Step 5: Solve for x
    x = 101,461,549.67/12,717.51
  6. Step 6: Final answer
    x = 7,978.10

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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.