Home / 18,887.37-28,335.12-5,740.80

Finding the Fourth Proportional to 18,887.37, 28,335.12 and 5,740.80

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Solution

The fourth proportional to 18,887.37, 28,335.12 and 5,740.80 is: 8,612.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.37 : 28,335.12 = 5,740.80 : x
  2. Step 2: Convert to fraction form
    18,887.37/28,335.12 = 5,740.80/x
  3. Step 3: Cross multiply
    18,887.37x = 28,335.12 × 5,740.80
  4. Step 4: Simplify right side
    18,887.37x = 162,666,256.90
  5. Step 5: Solve for x
    x = 162,666,256.90/18,887.37
  6. Step 6: Final answer
    x = 8,612.44

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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.