Home / 21,905.19-32,860.76-7,109.33

Finding the Fourth Proportional to 21,905.19, 32,860.76 and 7,109.33

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Solution

The fourth proportional to 21,905.19, 32,860.76 and 7,109.33 is: 10,664.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.19 : 32,860.76 = 7,109.33 : x
  2. Step 2: Convert to fraction form
    21,905.19/32,860.76 = 7,109.33/x
  3. Step 3: Cross multiply
    21,905.19x = 32,860.76 × 7,109.33
  4. Step 4: Simplify right side
    21,905.19x = 233,617,787.04
  5. Step 5: Solve for x
    x = 233,617,787.04/21,905.19
  6. Step 6: Final answer
    x = 10,664.95

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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.