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Finding the Fourth Proportional to 13,359.66, 18,434.88 and 7,390.38

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Solution

The fourth proportional to 13,359.66, 18,434.88 and 7,390.38 is: 10,197.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,359.66 : 18,434.88 = 7,390.38 : x
  2. Step 2: Convert to fraction form
    13,359.66/18,434.88 = 7,390.38/x
  3. Step 3: Cross multiply
    13,359.66x = 18,434.88 × 7,390.38
  4. Step 4: Simplify right side
    13,359.66x = 136,240,768.45
  5. Step 5: Solve for x
    x = 136,240,768.45/13,359.66
  6. Step 6: Final answer
    x = 10,197.92

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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.