Home / 30,039.49-45,065.70-8,981.20

Finding the Fourth Proportional to 30,039.49, 45,065.70 and 8,981.20

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Solution

The fourth proportional to 30,039.49, 45,065.70 and 8,981.20 is: 13,473.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,039.49 : 45,065.70 = 8,981.20 : x
  2. Step 2: Convert to fraction form
    30,039.49/45,065.70 = 8,981.20/x
  3. Step 3: Cross multiply
    30,039.49x = 45,065.70 × 8,981.20
  4. Step 4: Simplify right side
    30,039.49x = 404,744,064.84
  5. Step 5: Solve for x
    x = 404,744,064.84/30,039.49
  6. Step 6: Final answer
    x = 13,473.73

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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.