Home / 31,421,949.77-43,361,609.72-18,191,684.16

Finding the Fourth Proportional to 31,421,949.77, 43,361,609.72 and 18,191,684.16

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Solution

The fourth proportional to 31,421,949.77, 43,361,609.72 and 18,191,684.16 is: 25,104,129.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421,949.77 : 43,361,609.72 = 18,191,684.16 : x
  2. Step 2: Convert to fraction form
    31,421,949.77/43,361,609.72 = 18,191,684.16/x
  3. Step 3: Cross multiply
    31,421,949.77x = 43,361,609.72 × 18,191,684.16
  4. Step 4: Simplify right side
    31,421,949.77x = 788,820,708,604,467.62
  5. Step 5: Solve for x
    x = 788,820,708,604,467.62/31,421,949.77
  6. Step 6: Final answer
    x = 25,104,129.89

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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.