Home / 13,133.29-18,122.65-9,162.94

Finding the Fourth Proportional to 13,133.29, 18,122.65 and 9,162.94

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Solution

The fourth proportional to 13,133.29, 18,122.65 and 9,162.94 is: 12,643.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.29 : 18,122.65 = 9,162.94 : x
  2. Step 2: Convert to fraction form
    13,133.29/18,122.65 = 9,162.94/x
  3. Step 3: Cross multiply
    13,133.29x = 18,122.65 × 9,162.94
  4. Step 4: Simplify right side
    13,133.29x = 166,056,754.59
  5. Step 5: Solve for x
    x = 166,056,754.59/13,133.29
  6. Step 6: Final answer
    x = 12,643.96

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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.