Home / 21,384.04-29,646.79-20,204.68

Finding the Fourth Proportional to 21,384.04, 29,646.79 and 20,204.68

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Solution

The fourth proportional to 21,384.04, 29,646.79 and 20,204.68 is: 28,011.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.04 : 29,646.79 = 20,204.68 : x
  2. Step 2: Convert to fraction form
    21,384.04/29,646.79 = 20,204.68/x
  3. Step 3: Cross multiply
    21,384.04x = 29,646.79 × 20,204.68
  4. Step 4: Simplify right side
    21,384.04x = 599,003,904.98
  5. Step 5: Solve for x
    x = 599,003,904.98/21,384.04
  6. Step 6: Final answer
    x = 28,011.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.