Home / 10,003.86-15,005.79-5,320.94

Finding the Fourth Proportional to 10,003.86, 15,005.79 and 5,320.94

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Solution

The fourth proportional to 10,003.86, 15,005.79 and 5,320.94 is: 7,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,003.86 : 15,005.79 = 5,320.94 : x
  2. Step 2: Convert to fraction form
    10,003.86/15,005.79 = 5,320.94/x
  3. Step 3: Cross multiply
    10,003.86x = 15,005.79 × 5,320.94
  4. Step 4: Simplify right side
    10,003.86x = 79,844,833.21
  5. Step 5: Solve for x
    x = 79,844,833.21/10,003.86
  6. Step 6: Final answer
    x = 7,981.40

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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.