Home / 19,903.15-29,854.64-5,112.05

Finding the Fourth Proportional to 19,903.15, 29,854.64 and 5,112.05

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Solution

The fourth proportional to 19,903.15, 29,854.64 and 5,112.05 is: 7,668.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,903.15 : 29,854.64 = 5,112.05 : x
  2. Step 2: Convert to fraction form
    19,903.15/29,854.64 = 5,112.05/x
  3. Step 3: Cross multiply
    19,903.15x = 29,854.64 × 5,112.05
  4. Step 4: Simplify right side
    19,903.15x = 152,618,275.92
  5. Step 5: Solve for x
    x = 152,618,275.92/19,903.15
  6. Step 6: Final answer
    x = 7,668.05

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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.