Home / 15,105.81-20,853.59-9,443.70

Finding the Fourth Proportional to 15,105.81, 20,853.59 and 9,443.70

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Solution

The fourth proportional to 15,105.81, 20,853.59 and 9,443.70 is: 13,037.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,105.81 : 20,853.59 = 9,443.70 : x
  2. Step 2: Convert to fraction form
    15,105.81/20,853.59 = 9,443.70/x
  3. Step 3: Cross multiply
    15,105.81x = 20,853.59 × 9,443.70
  4. Step 4: Simplify right side
    15,105.81x = 196,935,047.88
  5. Step 5: Solve for x
    x = 196,935,047.88/15,105.81
  6. Step 6: Final answer
    x = 13,037.04

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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.