Home / 21,451.20-29,602.74-12,019.86

Finding the Fourth Proportional to 21,451.20, 29,602.74 and 12,019.86

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Solution

The fourth proportional to 21,451.20, 29,602.74 and 12,019.86 is: 16,587.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.20 : 29,602.74 = 12,019.86 : x
  2. Step 2: Convert to fraction form
    21,451.20/29,602.74 = 12,019.86/x
  3. Step 3: Cross multiply
    21,451.20x = 29,602.74 × 12,019.86
  4. Step 4: Simplify right side
    21,451.20x = 355,820,790.42
  5. Step 5: Solve for x
    x = 355,820,790.42/21,451.20
  6. Step 6: Final answer
    x = 16,587.45

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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.