Home / 21,219,410.88-31,806,455.16-12,101,876.24

Finding the Fourth Proportional to 21,219,410.88, 31,806,455.16 and 12,101,876.24

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Solution

The fourth proportional to 21,219,410.88, 31,806,455.16 and 12,101,876.24 is: 18,139,890.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219,410.88 : 31,806,455.16 = 12,101,876.24 : x
  2. Step 2: Convert to fraction form
    21,219,410.88/31,806,455.16 = 12,101,876.24/x
  3. Step 3: Cross multiply
    21,219,410.88x = 31,806,455.16 × 12,101,876.24
  4. Step 4: Simplify right side
    21,219,410.88x = 384,917,783,820,397.12
  5. Step 5: Solve for x
    x = 384,917,783,820,397.12/21,219,410.88
  6. Step 6: Final answer
    x = 18,139,890.22

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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.