Home / 31,451,411.52-43,416,340.25-21,144,113.33

Finding the Fourth Proportional to 31,451,411.52, 43,416,340.25 and 21,144,113.33

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Solution

The fourth proportional to 31,451,411.52, 43,416,340.25 and 21,144,113.33 is: 29,187,879.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,451,411.52 : 43,416,340.25 = 21,144,113.33 : x
  2. Step 2: Convert to fraction form
    31,451,411.52/43,416,340.25 = 21,144,113.33/x
  3. Step 3: Cross multiply
    31,451,411.52x = 43,416,340.25 × 21,144,113.33
  4. Step 4: Simplify right side
    31,451,411.52x = 918,000,018,297,038.12
  5. Step 5: Solve for x
    x = 918,000,018,297,038.12/31,451,411.52
  6. Step 6: Final answer
    x = 29,187,879.78

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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.