Home / 21,014,102.10-31,521,153.15-7,382,640.45

Finding the Fourth Proportional to 21,014,102.10, 31,521,153.15 and 7,382,640.45

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Solution

The fourth proportional to 21,014,102.10, 31,521,153.15 and 7,382,640.45 is: 11,073,960.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014,102.10 : 31,521,153.15 = 7,382,640.45 : x
  2. Step 2: Convert to fraction form
    21,014,102.10/31,521,153.15 = 7,382,640.45/x
  3. Step 3: Cross multiply
    21,014,102.10x = 31,521,153.15 × 7,382,640.45
  4. Step 4: Simplify right side
    21,014,102.10x = 232,709,340,275,834.91
  5. Step 5: Solve for x
    x = 232,709,340,275,834.91/21,014,102.10
  6. Step 6: Final answer
    x = 11,073,960.68

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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.