Home / 18,688.51-25,789.17-10,190.20

Finding the Fourth Proportional to 18,688.51, 25,789.17 and 10,190.20

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Solution

The fourth proportional to 18,688.51, 25,789.17 and 10,190.20 is: 14,061.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.51 : 25,789.17 = 10,190.20 : x
  2. Step 2: Convert to fraction form
    18,688.51/25,789.17 = 10,190.20/x
  3. Step 3: Cross multiply
    18,688.51x = 25,789.17 × 10,190.20
  4. Step 4: Simplify right side
    18,688.51x = 262,796,800.13
  5. Step 5: Solve for x
    x = 262,796,800.13/18,688.51
  6. Step 6: Final answer
    x = 14,061.95

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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.