Home / 21,146.54-29,182.10-11,715.08

Finding the Fourth Proportional to 21,146.54, 29,182.10 and 11,715.08

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Solution

The fourth proportional to 21,146.54, 29,182.10 and 11,715.08 is: 16,166.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.54 : 29,182.10 = 11,715.08 : x
  2. Step 2: Convert to fraction form
    21,146.54/29,182.10 = 11,715.08/x
  3. Step 3: Cross multiply
    21,146.54x = 29,182.10 × 11,715.08
  4. Step 4: Simplify right side
    21,146.54x = 341,870,431.58
  5. Step 5: Solve for x
    x = 341,870,431.58/21,146.54
  6. Step 6: Final answer
    x = 16,166.74

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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.