Home / 31,764.15-43,814.70-20,448.45

Finding the Fourth Proportional to 31,764.15, 43,814.70 and 20,448.45

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Solution

The fourth proportional to 31,764.15, 43,814.70 and 20,448.45 is: 28,206.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,764.15 : 43,814.70 = 20,448.45 : x
  2. Step 2: Convert to fraction form
    31,764.15/43,814.70 = 20,448.45/x
  3. Step 3: Cross multiply
    31,764.15x = 43,814.70 × 20,448.45
  4. Step 4: Simplify right side
    31,764.15x = 895,942,702.22
  5. Step 5: Solve for x
    x = 895,942,702.22/31,764.15
  6. Step 6: Final answer
    x = 28,206.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.