Home / 19,777.36-27,295.28-12,977.12

Finding the Fourth Proportional to 19,777.36, 27,295.28 and 12,977.12

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Solution

The fourth proportional to 19,777.36, 27,295.28 and 12,977.12 is: 17,910.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,777.36 : 27,295.28 = 12,977.12 : x
  2. Step 2: Convert to fraction form
    19,777.36/27,295.28 = 12,977.12/x
  3. Step 3: Cross multiply
    19,777.36x = 27,295.28 × 12,977.12
  4. Step 4: Simplify right side
    19,777.36x = 354,214,123.99
  5. Step 5: Solve for x
    x = 354,214,123.99/19,777.36
  6. Step 6: Final answer
    x = 17,910.08

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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.