Home / 18,747.70-28,135.40-8,887.02

Finding the Fourth Proportional to 18,747.70, 28,135.40 and 8,887.02

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Solution

The fourth proportional to 18,747.70, 28,135.40 and 8,887.02 is: 13,337.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.70 : 28,135.40 = 8,887.02 : x
  2. Step 2: Convert to fraction form
    18,747.70/28,135.40 = 8,887.02/x
  3. Step 3: Cross multiply
    18,747.70x = 28,135.40 × 8,887.02
  4. Step 4: Simplify right side
    18,747.70x = 250,039,762.55
  5. Step 5: Solve for x
    x = 250,039,762.55/18,747.70
  6. Step 6: Final answer
    x = 13,337.09

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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.