Home / 18,988.98-28,483.36-7,744.28

Finding the Fourth Proportional to 18,988.98, 28,483.36 and 7,744.28

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Solution

The fourth proportional to 18,988.98, 28,483.36 and 7,744.28 is: 11,616.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.98 : 28,483.36 = 7,744.28 : x
  2. Step 2: Convert to fraction form
    18,988.98/28,483.36 = 7,744.28/x
  3. Step 3: Cross multiply
    18,988.98x = 28,483.36 × 7,744.28
  4. Step 4: Simplify right side
    18,988.98x = 220,583,115.18
  5. Step 5: Solve for x
    x = 220,583,115.18/18,988.98
  6. Step 6: Final answer
    x = 11,616.38

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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.