Home / 19,876.92-27,430.02-11,380.56

Finding the Fourth Proportional to 19,876.92, 27,430.02 and 11,380.56

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Solution

The fourth proportional to 19,876.92, 27,430.02 and 11,380.56 is: 15,705.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.92 : 27,430.02 = 11,380.56 : x
  2. Step 2: Convert to fraction form
    19,876.92/27,430.02 = 11,380.56/x
  3. Step 3: Cross multiply
    19,876.92x = 27,430.02 × 11,380.56
  4. Step 4: Simplify right side
    19,876.92x = 312,168,988.41
  5. Step 5: Solve for x
    x = 312,168,988.41/19,876.92
  6. Step 6: Final answer
    x = 15,705.10

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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.