Home / 21,888.48-30,203.28-12,327.20

Finding the Fourth Proportional to 21,888.48, 30,203.28 and 12,327.20

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Solution

The fourth proportional to 21,888.48, 30,203.28 and 12,327.20 is: 17,009.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888.48 : 30,203.28 = 12,327.20 : x
  2. Step 2: Convert to fraction form
    21,888.48/30,203.28 = 12,327.20/x
  3. Step 3: Cross multiply
    21,888.48x = 30,203.28 × 12,327.20
  4. Step 4: Simplify right side
    21,888.48x = 372,321,873.22
  5. Step 5: Solve for x
    x = 372,321,873.22/21,888.48
  6. Step 6: Final answer
    x = 17,009.95

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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.