Home / 21,248,309.71-31,878,969.24-10,880,869.30

Finding the Fourth Proportional to 21,248,309.71, 31,878,969.24 and 10,880,869.30

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Solution

The fourth proportional to 21,248,309.71, 31,878,969.24 and 10,880,869.30 is: 16,324,634.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248,309.71 : 31,878,969.24 = 10,880,869.30 : x
  2. Step 2: Convert to fraction form
    21,248,309.71/31,878,969.24 = 10,880,869.30/x
  3. Step 3: Cross multiply
    21,248,309.71x = 31,878,969.24 × 10,880,869.30
  4. Step 4: Simplify right side
    21,248,309.71x = 346,870,897,719,160.31
  5. Step 5: Solve for x
    x = 346,870,897,719,160.31/21,248,309.71
  6. Step 6: Final answer
    x = 16,324,634.87

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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.