Home / 15,516.73-21,412.41-8,443.12

Finding the Fourth Proportional to 15,516.73, 21,412.41 and 8,443.12

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Solution

The fourth proportional to 15,516.73, 21,412.41 and 8,443.12 is: 11,651.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.73 : 21,412.41 = 8,443.12 : x
  2. Step 2: Convert to fraction form
    15,516.73/21,412.41 = 8,443.12/x
  3. Step 3: Cross multiply
    15,516.73x = 21,412.41 × 8,443.12
  4. Step 4: Simplify right side
    15,516.73x = 180,787,547.12
  5. Step 5: Solve for x
    x = 180,787,547.12/15,516.73
  6. Step 6: Final answer
    x = 11,651.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.