Home / 18,985.86-28,478.36-5,837.94

Finding the Fourth Proportional to 18,985.86, 28,478.36 and 5,837.94

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Solution

The fourth proportional to 18,985.86, 28,478.36 and 5,837.94 is: 8,756.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,985.86 : 28,478.36 = 5,837.94 : x
  2. Step 2: Convert to fraction form
    18,985.86/28,478.36 = 5,837.94/x
  3. Step 3: Cross multiply
    18,985.86x = 28,478.36 × 5,837.94
  4. Step 4: Simplify right side
    18,985.86x = 166,254,956.98
  5. Step 5: Solve for x
    x = 166,254,956.98/18,985.86
  6. Step 6: Final answer
    x = 8,756.78

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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.