Home / 21,011,812.39-31,453,075.45-13,709,548.61

Finding the Fourth Proportional to 21,011,812.39, 31,453,075.45 and 13,709,548.61

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Solution

The fourth proportional to 21,011,812.39, 31,453,075.45 and 13,709,548.61 is: 20,522,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011,812.39 : 31,453,075.45 = 13,709,548.61 : x
  2. Step 2: Convert to fraction form
    21,011,812.39/31,453,075.45 = 13,709,548.61/x
  3. Step 3: Cross multiply
    21,011,812.39x = 31,453,075.45 × 13,709,548.61
  4. Step 4: Simplify right side
    21,011,812.39x = 431,207,466,793,593.25
  5. Step 5: Solve for x
    x = 431,207,466,793,593.25/21,011,812.39
  6. Step 6: Final answer
    x = 20,522,145.30

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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.