Home / 21,450.64-29,602.46-12,019.80

Finding the Fourth Proportional to 21,450.64, 29,602.46 and 12,019.80

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Solution

The fourth proportional to 21,450.64, 29,602.46 and 12,019.80 is: 16,587.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,450.64 : 29,602.46 = 12,019.80 : x
  2. Step 2: Convert to fraction form
    21,450.64/29,602.46 = 12,019.80/x
  3. Step 3: Cross multiply
    21,450.64x = 29,602.46 × 12,019.80
  4. Step 4: Simplify right side
    21,450.64x = 355,815,648.71
  5. Step 5: Solve for x
    x = 355,815,648.71/21,450.64
  6. Step 6: Final answer
    x = 16,587.65

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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.