Home / 30,429,449.09-41,979,444.26-20,130,516.17

Finding the Fourth Proportional to 30,429,449.09, 41,979,444.26 and 20,130,516.17

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Solution

The fourth proportional to 30,429,449.09, 41,979,444.26 and 20,130,516.17 is: 27,771,382.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,429,449.09 : 41,979,444.26 = 20,130,516.17 : x
  2. Step 2: Convert to fraction form
    30,429,449.09/41,979,444.26 = 20,130,516.17/x
  3. Step 3: Cross multiply
    30,429,449.09x = 41,979,444.26 × 20,130,516.17
  4. Step 4: Simplify right side
    30,429,449.09x = 845,067,881,172,993.88
  5. Step 5: Solve for x
    x = 845,067,881,172,993.88/30,429,449.09
  6. Step 6: Final answer
    x = 27,771,382.87

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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.