Home / 20,883.69-31,286.30-10,341.45

Finding the Fourth Proportional to 20,883.69, 31,286.30 and 10,341.45

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Solution

The fourth proportional to 20,883.69, 31,286.30 and 10,341.45 is: 15,492.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.69 : 31,286.30 = 10,341.45 : x
  2. Step 2: Convert to fraction form
    20,883.69/31,286.30 = 10,341.45/x
  3. Step 3: Cross multiply
    20,883.69x = 31,286.30 × 10,341.45
  4. Step 4: Simplify right side
    20,883.69x = 323,545,655.43
  5. Step 5: Solve for x
    x = 323,545,655.43/20,883.69
  6. Step 6: Final answer
    x = 15,492.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.