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Finding the Fourth Proportional to 22,102.40, 33,110.40 and 20,547.20

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Solution

The fourth proportional to 22,102.40, 33,110.40 and 20,547.20 is: 30,780.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,102.40 : 33,110.40 = 20,547.20 : x
  2. Step 2: Convert to fraction form
    22,102.40/33,110.40 = 20,547.20/x
  3. Step 3: Cross multiply
    22,102.40x = 33,110.40 × 20,547.20
  4. Step 4: Simplify right side
    22,102.40x = 680,326,010.88
  5. Step 5: Solve for x
    x = 680,326,010.88/22,102.40
  6. Step 6: Final answer
    x = 30,780.64

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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.