Home / 21,135.16-31,707.58-11,269.24

Finding the Fourth Proportional to 21,135.16, 31,707.58 and 11,269.24

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Solution

The fourth proportional to 21,135.16, 31,707.58 and 11,269.24 is: 16,906.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.16 : 31,707.58 = 11,269.24 : x
  2. Step 2: Convert to fraction form
    21,135.16/31,707.58 = 11,269.24/x
  3. Step 3: Cross multiply
    21,135.16x = 31,707.58 × 11,269.24
  4. Step 4: Simplify right side
    21,135.16x = 357,320,328.84
  5. Step 5: Solve for x
    x = 357,320,328.84/21,135.16
  6. Step 6: Final answer
    x = 16,906.44

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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.