Home / 21,333.00-31,929.80-19,286.81

Finding the Fourth Proportional to 21,333.00, 31,929.80 and 19,286.81

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Solution

The fourth proportional to 21,333.00, 31,929.80 and 19,286.81 is: 28,867.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,333.00 : 31,929.80 = 19,286.81 : x
  2. Step 2: Convert to fraction form
    21,333.00/31,929.80 = 19,286.81/x
  3. Step 3: Cross multiply
    21,333.00x = 31,929.80 × 19,286.81
  4. Step 4: Simplify right side
    21,333.00x = 615,823,849.59
  5. Step 5: Solve for x
    x = 615,823,849.59/21,333.00
  6. Step 6: Final answer
    x = 28,867.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.