Home / 21,551.12-29,727.48-13,985.36

Finding the Fourth Proportional to 21,551.12, 29,727.48 and 13,985.36

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Solution

The fourth proportional to 21,551.12, 29,727.48 and 13,985.36 is: 19,291.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,551.12 : 29,727.48 = 13,985.36 : x
  2. Step 2: Convert to fraction form
    21,551.12/29,727.48 = 13,985.36/x
  3. Step 3: Cross multiply
    21,551.12x = 29,727.48 × 13,985.36
  4. Step 4: Simplify right side
    21,551.12x = 415,749,509.69
  5. Step 5: Solve for x
    x = 415,749,509.69/21,551.12
  6. Step 6: Final answer
    x = 19,291.32

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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.