Home / 21,081.90-31,597.39-9,230.59

Finding the Fourth Proportional to 21,081.90, 31,597.39 and 9,230.59

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Solution

The fourth proportional to 21,081.90, 31,597.39 and 9,230.59 is: 13,834.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.90 : 31,597.39 = 9,230.59 : x
  2. Step 2: Convert to fraction form
    21,081.90/31,597.39 = 9,230.59/x
  3. Step 3: Cross multiply
    21,081.90x = 31,597.39 × 9,230.59
  4. Step 4: Simplify right side
    21,081.90x = 291,662,603.20
  5. Step 5: Solve for x
    x = 291,662,603.20/21,081.90
  6. Step 6: Final answer
    x = 13,834.74

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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.