Home / 14,158.20-19,538.82-7,785.28

Finding the Fourth Proportional to 14,158.20, 19,538.82 and 7,785.28

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Solution

The fourth proportional to 14,158.20, 19,538.82 and 7,785.28 is: 10,743.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,158.20 : 19,538.82 = 7,785.28 : x
  2. Step 2: Convert to fraction form
    14,158.20/19,538.82 = 7,785.28/x
  3. Step 3: Cross multiply
    14,158.20x = 19,538.82 × 7,785.28
  4. Step 4: Simplify right side
    14,158.20x = 152,115,184.57
  5. Step 5: Solve for x
    x = 152,115,184.57/14,158.20
  6. Step 6: Final answer
    x = 10,743.96

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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.