Home / 19,937.96-27,507.78-12,869.08

Finding the Fourth Proportional to 19,937.96, 27,507.78 and 12,869.08

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Solution

The fourth proportional to 19,937.96, 27,507.78 and 12,869.08 is: 17,755.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,937.96 : 27,507.78 = 12,869.08 : x
  2. Step 2: Convert to fraction form
    19,937.96/27,507.78 = 12,869.08/x
  3. Step 3: Cross multiply
    19,937.96x = 27,507.78 × 12,869.08
  4. Step 4: Simplify right side
    19,937.96x = 353,999,821.44
  5. Step 5: Solve for x
    x = 353,999,821.44/19,937.96
  6. Step 6: Final answer
    x = 17,755.07

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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.