Home / 21,508.84-29,686.14-12,080.44

Finding the Fourth Proportional to 21,508.84, 29,686.14 and 12,080.44

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Solution

The fourth proportional to 21,508.84, 29,686.14 and 12,080.44 is: 16,673.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,508.84 : 29,686.14 = 12,080.44 : x
  2. Step 2: Convert to fraction form
    21,508.84/29,686.14 = 12,080.44/x
  3. Step 3: Cross multiply
    21,508.84x = 29,686.14 × 12,080.44
  4. Step 4: Simplify right side
    21,508.84x = 358,621,633.10
  5. Step 5: Solve for x
    x = 358,621,633.10/21,508.84
  6. Step 6: Final answer
    x = 16,673.22

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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.