Home / 30,109.59-45,139.68-11,378.97

Finding the Fourth Proportional to 30,109.59, 45,139.68 and 11,378.97

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Solution

The fourth proportional to 30,109.59, 45,139.68 and 11,378.97 is: 17,059.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,109.59 : 45,139.68 = 11,378.97 : x
  2. Step 2: Convert to fraction form
    30,109.59/45,139.68 = 11,378.97/x
  3. Step 3: Cross multiply
    30,109.59x = 45,139.68 × 11,378.97
  4. Step 4: Simplify right side
    30,109.59x = 513,643,064.53
  5. Step 5: Solve for x
    x = 513,643,064.53/30,109.59
  6. Step 6: Final answer
    x = 17,059.12

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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.