Home / 21,090.24-29,107.08-12,146.76

Finding the Fourth Proportional to 21,090.24, 29,107.08 and 12,146.76

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Solution

The fourth proportional to 21,090.24, 29,107.08 and 12,146.76 is: 16,764.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,090.24 : 29,107.08 = 12,146.76 : x
  2. Step 2: Convert to fraction form
    21,090.24/29,107.08 = 12,146.76/x
  3. Step 3: Cross multiply
    21,090.24x = 29,107.08 × 12,146.76
  4. Step 4: Simplify right side
    21,090.24x = 353,556,715.06
  5. Step 5: Solve for x
    x = 353,556,715.06/21,090.24
  6. Step 6: Final answer
    x = 16,764.00

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Double scale
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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.