Home / 21,669.12-29,903.04-12,109.14

Finding the Fourth Proportional to 21,669.12, 29,903.04 and 12,109.14

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Solution

The fourth proportional to 21,669.12, 29,903.04 and 12,109.14 is: 16,710.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,669.12 : 29,903.04 = 12,109.14 : x
  2. Step 2: Convert to fraction form
    21,669.12/29,903.04 = 12,109.14/x
  3. Step 3: Cross multiply
    21,669.12x = 29,903.04 × 12,109.14
  4. Step 4: Simplify right side
    21,669.12x = 362,100,097.79
  5. Step 5: Solve for x
    x = 362,100,097.79/21,669.12
  6. Step 6: Final answer
    x = 16,710.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.