Home / 21,219,439.68-31,841,510.40-8,922,513.78

Finding the Fourth Proportional to 21,219,439.68, 31,841,510.40 and 8,922,513.78

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Solution

The fourth proportional to 21,219,439.68, 31,841,510.40 and 8,922,513.78 is: 13,388,964.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219,439.68 : 31,841,510.40 = 8,922,513.78 : x
  2. Step 2: Convert to fraction form
    21,219,439.68/31,841,510.40 = 8,922,513.78/x
  3. Step 3: Cross multiply
    21,219,439.68x = 31,841,510.40 × 8,922,513.78
  4. Step 4: Simplify right side
    21,219,439.68x = 284,106,315,320,013.25
  5. Step 5: Solve for x
    x = 284,106,315,320,013.25/21,219,439.68
  6. Step 6: Final answer
    x = 13,388,964.06

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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.