Home / 21,079.13-29,089.14-11,647.63

Finding the Fourth Proportional to 21,079.13, 29,089.14 and 11,647.63

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Solution

The fourth proportional to 21,079.13, 29,089.14 and 11,647.63 is: 16,073.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.13 : 29,089.14 = 11,647.63 : x
  2. Step 2: Convert to fraction form
    21,079.13/29,089.14 = 11,647.63/x
  3. Step 3: Cross multiply
    21,079.13x = 29,089.14 × 11,647.63
  4. Step 4: Simplify right side
    21,079.13x = 338,819,539.74
  5. Step 5: Solve for x
    x = 338,819,539.74/21,079.13
  6. Step 6: Final answer
    x = 16,073.70

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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.