Home / 21,036.08-29,021.64-12,082.16

Finding the Fourth Proportional to 21,036.08, 29,021.64 and 12,082.16

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Solution

The fourth proportional to 21,036.08, 29,021.64 and 12,082.16 is: 16,668.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,036.08 : 29,021.64 = 12,082.16 : x
  2. Step 2: Convert to fraction form
    21,036.08/29,021.64 = 12,082.16/x
  3. Step 3: Cross multiply
    21,036.08x = 29,021.64 × 12,082.16
  4. Step 4: Simplify right side
    21,036.08x = 350,644,097.94
  5. Step 5: Solve for x
    x = 350,644,097.94/21,036.08
  6. Step 6: Final answer
    x = 16,668.70

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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.