Home / 21,240.42-29,308.33-11,808.74

Finding the Fourth Proportional to 21,240.42, 29,308.33 and 11,808.74

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Solution

The fourth proportional to 21,240.42, 29,308.33 and 11,808.74 is: 16,294.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.42 : 29,308.33 = 11,808.74 : x
  2. Step 2: Convert to fraction form
    21,240.42/29,308.33 = 11,808.74/x
  3. Step 3: Cross multiply
    21,240.42x = 29,308.33 × 11,808.74
  4. Step 4: Simplify right side
    21,240.42x = 346,094,448.80
  5. Step 5: Solve for x
    x = 346,094,448.80/21,240.42
  6. Step 6: Final answer
    x = 16,294.14

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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.