Home / 30,279.32-45,419.19-11,554.31

Finding the Fourth Proportional to 30,279.32, 45,419.19 and 11,554.31

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Solution

The fourth proportional to 30,279.32, 45,419.19 and 11,554.31 is: 17,331.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,279.32 : 45,419.19 = 11,554.31 : x
  2. Step 2: Convert to fraction form
    30,279.32/45,419.19 = 11,554.31/x
  3. Step 3: Cross multiply
    30,279.32x = 45,419.19 × 11,554.31
  4. Step 4: Simplify right side
    30,279.32x = 524,787,401.21
  5. Step 5: Solve for x
    x = 524,787,401.21/30,279.32
  6. Step 6: Final answer
    x = 17,331.55

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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.