Home / 30,103.05-45,156.74-10,381.32

Finding the Fourth Proportional to 30,103.05, 45,156.74 and 10,381.32

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Solution

The fourth proportional to 30,103.05, 45,156.74 and 10,381.32 is: 15,572.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,103.05 : 45,156.74 = 10,381.32 : x
  2. Step 2: Convert to fraction form
    30,103.05/45,156.74 = 10,381.32/x
  3. Step 3: Cross multiply
    30,103.05x = 45,156.74 × 10,381.32
  4. Step 4: Simplify right side
    30,103.05x = 468,786,516.19
  5. Step 5: Solve for x
    x = 468,786,516.19/30,103.05
  6. Step 6: Final answer
    x = 15,572.73

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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.