Home / 18,985.98-28,478.16-5,837.79

Finding the Fourth Proportional to 18,985.98, 28,478.16 and 5,837.79

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Solution

The fourth proportional to 18,985.98, 28,478.16 and 5,837.79 is: 8,756.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,985.98 : 28,478.16 = 5,837.79 : x
  2. Step 2: Convert to fraction form
    18,985.98/28,478.16 = 5,837.79/x
  3. Step 3: Cross multiply
    18,985.98x = 28,478.16 × 5,837.79
  4. Step 4: Simplify right side
    18,985.98x = 166,249,517.67
  5. Step 5: Solve for x
    x = 166,249,517.67/18,985.98
  6. Step 6: Final answer
    x = 8,756.44

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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.