Home / 18,638.18-27,957.26-12,777.02

Finding the Fourth Proportional to 18,638.18, 27,957.26 and 12,777.02

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Solution

The fourth proportional to 18,638.18, 27,957.26 and 12,777.02 is: 19,165.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.18 : 27,957.26 = 12,777.02 : x
  2. Step 2: Convert to fraction form
    18,638.18/27,957.26 = 12,777.02/x
  3. Step 3: Cross multiply
    18,638.18x = 27,957.26 × 12,777.02
  4. Step 4: Simplify right side
    18,638.18x = 357,210,470.17
  5. Step 5: Solve for x
    x = 357,210,470.17/18,638.18
  6. Step 6: Final answer
    x = 19,165.52

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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.