Home / 21,451.23-29,602.61-12,019.77

Finding the Fourth Proportional to 21,451.23, 29,602.61 and 12,019.77

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Solution

The fourth proportional to 21,451.23, 29,602.61 and 12,019.77 is: 16,587.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.23 : 29,602.61 = 12,019.77 : x
  2. Step 2: Convert to fraction form
    21,451.23/29,602.61 = 12,019.77/x
  3. Step 3: Cross multiply
    21,451.23x = 29,602.61 × 12,019.77
  4. Step 4: Simplify right side
    21,451.23x = 355,816,563.60
  5. Step 5: Solve for x
    x = 355,816,563.60/21,451.23
  6. Step 6: Final answer
    x = 16,587.23

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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.