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Finding the Fourth Proportional to 21,888.48, 32,825.52 and 12,038.88

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Solution

The fourth proportional to 21,888.48, 32,825.52 and 12,038.88 is: 18,054.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888.48 : 32,825.52 = 12,038.88 : x
  2. Step 2: Convert to fraction form
    21,888.48/32,825.52 = 12,038.88/x
  3. Step 3: Cross multiply
    21,888.48x = 32,825.52 × 12,038.88
  4. Step 4: Simplify right side
    21,888.48x = 395,182,496.22
  5. Step 5: Solve for x
    x = 395,182,496.22/21,888.48
  6. Step 6: Final answer
    x = 18,054.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.