Home / 19,921.68-27,492.60-10,969.80

Finding the Fourth Proportional to 19,921.68, 27,492.60 and 10,969.80

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Solution

The fourth proportional to 19,921.68, 27,492.60 and 10,969.80 is: 15,138.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.68 : 27,492.60 = 10,969.80 : x
  2. Step 2: Convert to fraction form
    19,921.68/27,492.60 = 10,969.80/x
  3. Step 3: Cross multiply
    19,921.68x = 27,492.60 × 10,969.80
  4. Step 4: Simplify right side
    19,921.68x = 301,588,323.48
  5. Step 5: Solve for x
    x = 301,588,323.48/19,921.68
  6. Step 6: Final answer
    x = 15,138.70

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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.