Home / 30,540.08-45,802.74-12,761.13

Finding the Fourth Proportional to 30,540.08, 45,802.74 and 12,761.13

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Solution

The fourth proportional to 30,540.08, 45,802.74 and 12,761.13 is: 19,138.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,540.08 : 45,802.74 = 12,761.13 : x
  2. Step 2: Convert to fraction form
    30,540.08/45,802.74 = 12,761.13/x
  3. Step 3: Cross multiply
    30,540.08x = 45,802.74 × 12,761.13
  4. Step 4: Simplify right side
    30,540.08x = 584,494,719.50
  5. Step 5: Solve for x
    x = 584,494,719.50/30,540.08
  6. Step 6: Final answer
    x = 19,138.61

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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.