Home / 19,716.15-29,559.65-9,315.75

Finding the Fourth Proportional to 19,716.15, 29,559.65 and 9,315.75

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Solution

The fourth proportional to 19,716.15, 29,559.65 and 9,315.75 is: 13,966.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,716.15 : 29,559.65 = 9,315.75 : x
  2. Step 2: Convert to fraction form
    19,716.15/29,559.65 = 9,315.75/x
  3. Step 3: Cross multiply
    19,716.15x = 29,559.65 × 9,315.75
  4. Step 4: Simplify right side
    19,716.15x = 275,370,262.91
  5. Step 5: Solve for x
    x = 275,370,262.91/19,716.15
  6. Step 6: Final answer
    x = 13,966.74

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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.