Home / 18,711.49-25,820.81-10,644.05

Finding the Fourth Proportional to 18,711.49, 25,820.81 and 10,644.05

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Solution

The fourth proportional to 18,711.49, 25,820.81 and 10,644.05 is: 14,688.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.49 : 25,820.81 = 10,644.05 : x
  2. Step 2: Convert to fraction form
    18,711.49/25,820.81 = 10,644.05/x
  3. Step 3: Cross multiply
    18,711.49x = 25,820.81 × 10,644.05
  4. Step 4: Simplify right side
    18,711.49x = 274,837,992.68
  5. Step 5: Solve for x
    x = 274,837,992.68/18,711.49
  6. Step 6: Final answer
    x = 14,688.19

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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.