Home / 19,875.20-27,427.60-10,922.80

Finding the Fourth Proportional to 19,875.20, 27,427.60 and 10,922.80

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Solution

The fourth proportional to 19,875.20, 27,427.60 and 10,922.80 is: 15,073.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,875.20 : 27,427.60 = 10,922.80 : x
  2. Step 2: Convert to fraction form
    19,875.20/27,427.60 = 10,922.80/x
  3. Step 3: Cross multiply
    19,875.20x = 27,427.60 × 10,922.80
  4. Step 4: Simplify right side
    19,875.20x = 299,586,189.28
  5. Step 5: Solve for x
    x = 299,586,189.28/19,875.20
  6. Step 6: Final answer
    x = 15,073.37

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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.