Home / 21,306.13-29,402.48-12,808.34

Finding the Fourth Proportional to 21,306.13, 29,402.48 and 12,808.34

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Solution

The fourth proportional to 21,306.13, 29,402.48 and 12,808.34 is: 17,675.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.13 : 29,402.48 = 12,808.34 : x
  2. Step 2: Convert to fraction form
    21,306.13/29,402.48 = 12,808.34/x
  3. Step 3: Cross multiply
    21,306.13x = 29,402.48 × 12,808.34
  4. Step 4: Simplify right side
    21,306.13x = 376,596,960.68
  5. Step 5: Solve for x
    x = 376,596,960.68/21,306.13
  6. Step 6: Final answer
    x = 17,675.53

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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.