Home / 19,328.49-28,991.12-9,963.45

Finding the Fourth Proportional to 19,328.49, 28,991.12 and 9,963.45

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Solution

The fourth proportional to 19,328.49, 28,991.12 and 9,963.45 is: 14,944.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,328.49 : 28,991.12 = 9,963.45 : x
  2. Step 2: Convert to fraction form
    19,328.49/28,991.12 = 9,963.45/x
  3. Step 3: Cross multiply
    19,328.49x = 28,991.12 × 9,963.45
  4. Step 4: Simplify right side
    19,328.49x = 288,851,524.75
  5. Step 5: Solve for x
    x = 288,851,524.75/19,328.49
  6. Step 6: Final answer
    x = 14,944.34

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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.