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Finding the Fourth Proportional to 22,009.40, 32,918.10 and 19,686.20

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Solution

The fourth proportional to 22,009.40, 32,918.10 and 19,686.20 is: 29,443.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,009.40 : 32,918.10 = 19,686.20 : x
  2. Step 2: Convert to fraction form
    22,009.40/32,918.10 = 19,686.20/x
  3. Step 3: Cross multiply
    22,009.40x = 32,918.10 × 19,686.20
  4. Step 4: Simplify right side
    22,009.40x = 648,032,300.22
  5. Step 5: Solve for x
    x = 648,032,300.22/22,009.40
  6. Step 6: Final answer
    x = 29,443.43

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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.