Home / 21,087,029.10-31,567,558.05-12,562,977.90

Finding the Fourth Proportional to 21,087,029.10, 31,567,558.05 and 12,562,977.90

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Solution

The fourth proportional to 21,087,029.10, 31,567,558.05 and 12,562,977.90 is: 18,806,942.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087,029.10 : 31,567,558.05 = 12,562,977.90 : x
  2. Step 2: Convert to fraction form
    21,087,029.10/31,567,558.05 = 12,562,977.90/x
  3. Step 3: Cross multiply
    21,087,029.10x = 31,567,558.05 × 12,562,977.90
  4. Step 4: Simplify right side
    21,087,029.10x = 396,582,534,139,117.12
  5. Step 5: Solve for x
    x = 396,582,534,139,117.12/21,087,029.10
  6. Step 6: Final answer
    x = 18,806,942.04

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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.