Home / 21,642.36-29,867.10-13,254.12

Finding the Fourth Proportional to 21,642.36, 29,867.10 and 13,254.12

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Solution

The fourth proportional to 21,642.36, 29,867.10 and 13,254.12 is: 18,291.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,642.36 : 29,867.10 = 13,254.12 : x
  2. Step 2: Convert to fraction form
    21,642.36/29,867.10 = 13,254.12/x
  3. Step 3: Cross multiply
    21,642.36x = 29,867.10 × 13,254.12
  4. Step 4: Simplify right side
    21,642.36x = 395,862,127.45
  5. Step 5: Solve for x
    x = 395,862,127.45/21,642.36
  6. Step 6: Final answer
    x = 18,291.08

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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.