Home / 31,120.40-46,680.60-10,341.20

Finding the Fourth Proportional to 31,120.40, 46,680.60 and 10,341.20

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Solution

The fourth proportional to 31,120.40, 46,680.60 and 10,341.20 is: 15,511.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,120.40 : 46,680.60 = 10,341.20 : x
  2. Step 2: Convert to fraction form
    31,120.40/46,680.60 = 10,341.20/x
  3. Step 3: Cross multiply
    31,120.40x = 46,680.60 × 10,341.20
  4. Step 4: Simplify right side
    31,120.40x = 482,733,420.72
  5. Step 5: Solve for x
    x = 482,733,420.72/31,120.40
  6. Step 6: Final answer
    x = 15,511.80

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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.