Home / 18,670.89-28,011.80-5,523.60

Finding the Fourth Proportional to 18,670.89, 28,011.80 and 5,523.60

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Solution

The fourth proportional to 18,670.89, 28,011.80 and 5,523.60 is: 8,287.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.89 : 28,011.80 = 5,523.60 : x
  2. Step 2: Convert to fraction form
    18,670.89/28,011.80 = 5,523.60/x
  3. Step 3: Cross multiply
    18,670.89x = 28,011.80 × 5,523.60
  4. Step 4: Simplify right side
    18,670.89x = 154,725,950.86
  5. Step 5: Solve for x
    x = 154,725,950.86/18,670.89
  6. Step 6: Final answer
    x = 8,287.02

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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.