Home / 18,905.40-26,089.02-11,835.72

Finding the Fourth Proportional to 18,905.40, 26,089.02 and 11,835.72

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Solution

The fourth proportional to 18,905.40, 26,089.02 and 11,835.72 is: 16,333.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.40 : 26,089.02 = 11,835.72 : x
  2. Step 2: Convert to fraction form
    18,905.40/26,089.02 = 11,835.72/x
  3. Step 3: Cross multiply
    18,905.40x = 26,089.02 × 11,835.72
  4. Step 4: Simplify right side
    18,905.40x = 308,782,335.79
  5. Step 5: Solve for x
    x = 308,782,335.79/18,905.40
  6. Step 6: Final answer
    x = 16,333.02

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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.