Home / 19,783.92-27,298.32-11,398.80

Finding the Fourth Proportional to 19,783.92, 27,298.32 and 11,398.80

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Solution

The fourth proportional to 19,783.92, 27,298.32 and 11,398.80 is: 15,728.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,783.92 : 27,298.32 = 11,398.80 : x
  2. Step 2: Convert to fraction form
    19,783.92/27,298.32 = 11,398.80/x
  3. Step 3: Cross multiply
    19,783.92x = 27,298.32 × 11,398.80
  4. Step 4: Simplify right side
    19,783.92x = 311,168,090.02
  5. Step 5: Solve for x
    x = 311,168,090.02/19,783.92
  6. Step 6: Final answer
    x = 15,728.33

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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.