Home / 31,455.09-47,182.64-8,081.53

Finding the Fourth Proportional to 31,455.09, 47,182.64 and 8,081.53

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Solution

The fourth proportional to 31,455.09, 47,182.64 and 8,081.53 is: 12,122.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455.09 : 47,182.64 = 8,081.53 : x
  2. Step 2: Convert to fraction form
    31,455.09/47,182.64 = 8,081.53/x
  3. Step 3: Cross multiply
    31,455.09x = 47,182.64 × 8,081.53
  4. Step 4: Simplify right side
    31,455.09x = 381,307,999.82
  5. Step 5: Solve for x
    x = 381,307,999.82/31,455.09
  6. Step 6: Final answer
    x = 12,122.30

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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.