Home / 21,216.66-29,279.93-11,785.23

Finding the Fourth Proportional to 21,216.66, 29,279.93 and 11,785.23

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Solution

The fourth proportional to 21,216.66, 29,279.93 and 11,785.23 is: 16,264.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,216.66 : 29,279.93 = 11,785.23 : x
  2. Step 2: Convert to fraction form
    21,216.66/29,279.93 = 11,785.23/x
  3. Step 3: Cross multiply
    21,216.66x = 29,279.93 × 11,785.23
  4. Step 4: Simplify right side
    21,216.66x = 345,070,650.51
  5. Step 5: Solve for x
    x = 345,070,650.51/21,216.66
  6. Step 6: Final answer
    x = 16,264.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.