Home / 15,043.10-20,750.39-9,663.72

Finding the Fourth Proportional to 15,043.10, 20,750.39 and 9,663.72

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Solution

The fourth proportional to 15,043.10, 20,750.39 and 9,663.72 is: 13,330.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,043.10 : 20,750.39 = 9,663.72 : x
  2. Step 2: Convert to fraction form
    15,043.10/20,750.39 = 9,663.72/x
  3. Step 3: Cross multiply
    15,043.10x = 20,750.39 × 9,663.72
  4. Step 4: Simplify right side
    15,043.10x = 200,525,910.53
  5. Step 5: Solve for x
    x = 200,525,910.53/15,043.10
  6. Step 6: Final answer
    x = 13,330.10

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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.