Home / 21,530.12-29,712.24-13,033.80

Finding the Fourth Proportional to 21,530.12, 29,712.24 and 13,033.80

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Solution

The fourth proportional to 21,530.12, 29,712.24 and 13,033.80 is: 17,987.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,530.12 : 29,712.24 = 13,033.80 : x
  2. Step 2: Convert to fraction form
    21,530.12/29,712.24 = 13,033.80/x
  3. Step 3: Cross multiply
    21,530.12x = 29,712.24 × 13,033.80
  4. Step 4: Simplify right side
    21,530.12x = 387,263,393.71
  5. Step 5: Solve for x
    x = 387,263,393.71/21,530.12
  6. Step 6: Final answer
    x = 17,987.06

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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.