Home / 20,646.10-30,981.45-7,499.50

Finding the Fourth Proportional to 20,646.10, 30,981.45 and 7,499.50

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Solution

The fourth proportional to 20,646.10, 30,981.45 and 7,499.50 is: 11,253.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.10 : 30,981.45 = 7,499.50 : x
  2. Step 2: Convert to fraction form
    20,646.10/30,981.45 = 7,499.50/x
  3. Step 3: Cross multiply
    20,646.10x = 30,981.45 × 7,499.50
  4. Step 4: Simplify right side
    20,646.10x = 232,345,334.94
  5. Step 5: Solve for x
    x = 232,345,334.94/20,646.10
  6. Step 6: Final answer
    x = 11,253.71

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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.