Home / 30,342.48-45,508.60-8,158.32

Finding the Fourth Proportional to 30,342.48, 45,508.60 and 8,158.32

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Solution

The fourth proportional to 30,342.48, 45,508.60 and 8,158.32 is: 12,236.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,342.48 : 45,508.60 = 8,158.32 : x
  2. Step 2: Convert to fraction form
    30,342.48/45,508.60 = 8,158.32/x
  3. Step 3: Cross multiply
    30,342.48x = 45,508.60 × 8,158.32
  4. Step 4: Simplify right side
    30,342.48x = 371,273,721.55
  5. Step 5: Solve for x
    x = 371,273,721.55/30,342.48
  6. Step 6: Final answer
    x = 12,236.10

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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.