Home / 19,686.78-29,542.95-11,783.34

Finding the Fourth Proportional to 19,686.78, 29,542.95 and 11,783.34

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Solution

The fourth proportional to 19,686.78, 29,542.95 and 11,783.34 is: 17,682.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,686.78 : 29,542.95 = 11,783.34 : x
  2. Step 2: Convert to fraction form
    19,686.78/29,542.95 = 11,783.34/x
  3. Step 3: Cross multiply
    19,686.78x = 29,542.95 × 11,783.34
  4. Step 4: Simplify right side
    19,686.78x = 348,114,624.45
  5. Step 5: Solve for x
    x = 348,114,624.45/19,686.78
  6. Step 6: Final answer
    x = 17,682.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.