Home / 20,383.04-28,142.42-12,737.99

Finding the Fourth Proportional to 20,383.04, 28,142.42 and 12,737.99

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Solution

The fourth proportional to 20,383.04, 28,142.42 and 12,737.99 is: 17,587.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383.04 : 28,142.42 = 12,737.99 : x
  2. Step 2: Convert to fraction form
    20,383.04/28,142.42 = 12,737.99/x
  3. Step 3: Cross multiply
    20,383.04x = 28,142.42 × 12,737.99
  4. Step 4: Simplify right side
    20,383.04x = 358,477,660.13
  5. Step 5: Solve for x
    x = 358,477,660.13/20,383.04
  6. Step 6: Final answer
    x = 17,587.06

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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.