Home / 9,211.92-13,728.54-8,916.72

Finding the Fourth Proportional to 9,211.92, 13,728.54 and 8,916.72

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Solution

The fourth proportional to 9,211.92, 13,728.54 and 8,916.72 is: 13,288.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,211.92 : 13,728.54 = 8,916.72 : x
  2. Step 2: Convert to fraction form
    9,211.92/13,728.54 = 8,916.72/x
  3. Step 3: Cross multiply
    9,211.92x = 13,728.54 × 8,916.72
  4. Step 4: Simplify right side
    9,211.92x = 122,413,547.19
  5. Step 5: Solve for x
    x = 122,413,547.19/9,211.92
  6. Step 6: Final answer
    x = 13,288.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.