Home / 15,507,311.09-21,399,737.69-9,709,292.21

Finding the Fourth Proportional to 15,507,311.09, 21,399,737.69 and 9,709,292.21

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Solution

The fourth proportional to 15,507,311.09, 21,399,737.69 and 9,709,292.21 is: 13,398,603.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507,311.09 : 21,399,737.69 = 9,709,292.21 : x
  2. Step 2: Convert to fraction form
    15,507,311.09/21,399,737.69 = 9,709,292.21/x
  3. Step 3: Cross multiply
    15,507,311.09x = 21,399,737.69 × 9,709,292.21
  4. Step 4: Simplify right side
    15,507,311.09x = 207,776,306,366,834.94
  5. Step 5: Solve for x
    x = 207,776,306,366,834.94/15,507,311.09
  6. Step 6: Final answer
    x = 13,398,603.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.