Home / 31,820.72-47,755.64-12,104.91

Finding the Fourth Proportional to 31,820.72, 47,755.64 and 12,104.91

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Solution

The fourth proportional to 31,820.72, 47,755.64 and 12,104.91 is: 18,166.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,820.72 : 47,755.64 = 12,104.91 : x
  2. Step 2: Convert to fraction form
    31,820.72/47,755.64 = 12,104.91/x
  3. Step 3: Cross multiply
    31,820.72x = 47,755.64 × 12,104.91
  4. Step 4: Simplify right side
    31,820.72x = 578,077,754.45
  5. Step 5: Solve for x
    x = 578,077,754.45/31,820.72
  6. Step 6: Final answer
    x = 18,166.71

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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.