Home / 21,081,037.80-31,621,556.70-10,305,251.40

Finding the Fourth Proportional to 21,081,037.80, 31,621,556.70 and 10,305,251.40

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Solution

The fourth proportional to 21,081,037.80, 31,621,556.70 and 10,305,251.40 is: 15,457,877.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081,037.80 : 31,621,556.70 = 10,305,251.40 : x
  2. Step 2: Convert to fraction form
    21,081,037.80/31,621,556.70 = 10,305,251.40/x
  3. Step 3: Cross multiply
    21,081,037.80x = 31,621,556.70 × 10,305,251.40
  4. Step 4: Simplify right side
    21,081,037.80x = 325,868,091,452,854.38
  5. Step 5: Solve for x
    x = 325,868,091,452,854.38/21,081,037.80
  6. Step 6: Final answer
    x = 15,457,877.10

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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.