Home / 19,815.68-29,718.75-5,771.90

Finding the Fourth Proportional to 19,815.68, 29,718.75 and 5,771.90

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Solution

The fourth proportional to 19,815.68, 29,718.75 and 5,771.90 is: 8,656.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.68 : 29,718.75 = 5,771.90 : x
  2. Step 2: Convert to fraction form
    19,815.68/29,718.75 = 5,771.90/x
  3. Step 3: Cross multiply
    19,815.68x = 29,718.75 × 5,771.90
  4. Step 4: Simplify right side
    19,815.68x = 171,533,653.13
  5. Step 5: Solve for x
    x = 171,533,653.13/19,815.68
  6. Step 6: Final answer
    x = 8,656.46

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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.