Home / 13,145.36-18,133.63-8,890.73

Finding the Fourth Proportional to 13,145.36, 18,133.63 and 8,890.73

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Solution

The fourth proportional to 13,145.36, 18,133.63 and 8,890.73 is: 12,264.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.36 : 18,133.63 = 8,890.73 : x
  2. Step 2: Convert to fraction form
    13,145.36/18,133.63 = 8,890.73/x
  3. Step 3: Cross multiply
    13,145.36x = 18,133.63 × 8,890.73
  4. Step 4: Simplify right side
    13,145.36x = 161,221,264.70
  5. Step 5: Solve for x
    x = 161,221,264.70/13,145.36
  6. Step 6: Final answer
    x = 12,264.50

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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.