Home / 21,239.92-29,307.64-11,808.24

Finding the Fourth Proportional to 21,239.92, 29,307.64 and 11,808.24

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Solution

The fourth proportional to 21,239.92, 29,307.64 and 11,808.24 is: 16,293.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239.92 : 29,307.64 = 11,808.24 : x
  2. Step 2: Convert to fraction form
    21,239.92/29,307.64 = 11,808.24/x
  3. Step 3: Cross multiply
    21,239.92x = 29,307.64 × 11,808.24
  4. Step 4: Simplify right side
    21,239.92x = 346,071,646.95
  5. Step 5: Solve for x
    x = 346,071,646.95/21,239.92
  6. Step 6: Final answer
    x = 16,293.45

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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.