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Finding the Fourth Proportional to 19,275.96, 28,913.97 and 9,917.22

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Solution

The fourth proportional to 19,275.96, 28,913.97 and 9,917.22 is: 14,875.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,275.96 : 28,913.97 = 9,917.22 : x
  2. Step 2: Convert to fraction form
    19,275.96/28,913.97 = 9,917.22/x
  3. Step 3: Cross multiply
    19,275.96x = 28,913.97 × 9,917.22
  4. Step 4: Simplify right side
    19,275.96x = 286,746,201.56
  5. Step 5: Solve for x
    x = 286,746,201.56/19,275.96
  6. Step 6: Final answer
    x = 14,875.85

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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.