Home / 21,822.60-32,705.10-19,345.80

Finding the Fourth Proportional to 21,822.60, 32,705.10 and 19,345.80

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Solution

The fourth proportional to 21,822.60, 32,705.10 and 19,345.80 is: 28,993.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,822.60 : 32,705.10 = 19,345.80 : x
  2. Step 2: Convert to fraction form
    21,822.60/32,705.10 = 19,345.80/x
  3. Step 3: Cross multiply
    21,822.60x = 32,705.10 × 19,345.80
  4. Step 4: Simplify right side
    21,822.60x = 632,706,323.58
  5. Step 5: Solve for x
    x = 632,706,323.58/21,822.60
  6. Step 6: Final answer
    x = 28,993.17

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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.