Home / 15,152.49-20,910.45-8,439.41

Finding the Fourth Proportional to 15,152.49, 20,910.45 and 8,439.41

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Solution

The fourth proportional to 15,152.49, 20,910.45 and 8,439.41 is: 11,646.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,152.49 : 20,910.45 = 8,439.41 : x
  2. Step 2: Convert to fraction form
    15,152.49/20,910.45 = 8,439.41/x
  3. Step 3: Cross multiply
    15,152.49x = 20,910.45 × 8,439.41
  4. Step 4: Simplify right side
    15,152.49x = 176,471,860.83
  5. Step 5: Solve for x
    x = 176,471,860.83/15,152.49
  6. Step 6: Final answer
    x = 11,646.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.