Home / 21,451.34-29,602.80-12,019.91

Finding the Fourth Proportional to 21,451.34, 29,602.80 and 12,019.91

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Solution

The fourth proportional to 21,451.34, 29,602.80 and 12,019.91 is: 16,587.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.34 : 29,602.80 = 12,019.91 : x
  2. Step 2: Convert to fraction form
    21,451.34/29,602.80 = 12,019.91/x
  3. Step 3: Cross multiply
    21,451.34x = 29,602.80 × 12,019.91
  4. Step 4: Simplify right side
    21,451.34x = 355,822,843.73
  5. Step 5: Solve for x
    x = 355,822,843.73/21,451.34
  6. Step 6: Final answer
    x = 16,587.44

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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.