Home / 18,633.84-25,717.68-10,978.35

Finding the Fourth Proportional to 18,633.84, 25,717.68 and 10,978.35

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Solution

The fourth proportional to 18,633.84, 25,717.68 and 10,978.35 is: 15,151.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,633.84 : 25,717.68 = 10,978.35 : x
  2. Step 2: Convert to fraction form
    18,633.84/25,717.68 = 10,978.35/x
  3. Step 3: Cross multiply
    18,633.84x = 25,717.68 × 10,978.35
  4. Step 4: Simplify right side
    18,633.84x = 282,337,692.23
  5. Step 5: Solve for x
    x = 282,337,692.23/18,633.84
  6. Step 6: Final answer
    x = 15,151.88

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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.