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Finding the Fourth Proportional to 19,277.96, 28,916.98 and 9,919.22

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Solution

The fourth proportional to 19,277.96, 28,916.98 and 9,919.22 is: 14,878.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,277.96 : 28,916.98 = 9,919.22 : x
  2. Step 2: Convert to fraction form
    19,277.96/28,916.98 = 9,919.22/x
  3. Step 3: Cross multiply
    19,277.96x = 28,916.98 × 9,919.22
  4. Step 4: Simplify right side
    19,277.96x = 286,833,886.36
  5. Step 5: Solve for x
    x = 286,833,886.36/19,277.96
  6. Step 6: Final answer
    x = 14,878.85

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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.