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Finding the Fourth Proportional to 21,955.47, 32,934.75 and 8,807.84

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Solution

The fourth proportional to 21,955.47, 32,934.75 and 8,807.84 is: 13,212.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.47 : 32,934.75 = 8,807.84 : x
  2. Step 2: Convert to fraction form
    21,955.47/32,934.75 = 8,807.84/x
  3. Step 3: Cross multiply
    21,955.47x = 32,934.75 × 8,807.84
  4. Step 4: Simplify right side
    21,955.47x = 290,084,090.78
  5. Step 5: Solve for x
    x = 290,084,090.78/21,955.47
  6. Step 6: Final answer
    x = 13,212.38

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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.