Home / 21,281.22-31,924.65-11,291.07

Finding the Fourth Proportional to 21,281.22, 31,924.65 and 11,291.07

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Solution

The fourth proportional to 21,281.22, 31,924.65 and 11,291.07 is: 16,938.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.22 : 31,924.65 = 11,291.07 : x
  2. Step 2: Convert to fraction form
    21,281.22/31,924.65 = 11,291.07/x
  3. Step 3: Cross multiply
    21,281.22x = 31,924.65 × 11,291.07
  4. Step 4: Simplify right side
    21,281.22x = 360,463,454.73
  5. Step 5: Solve for x
    x = 360,463,454.73/21,281.22
  6. Step 6: Final answer
    x = 16,938.10

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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.