Home / 21,136,645.08-31,651,145.16-13,926,319.28

Finding the Fourth Proportional to 21,136,645.08, 31,651,145.16 and 13,926,319.28

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Solution

The fourth proportional to 21,136,645.08, 31,651,145.16 and 13,926,319.28 is: 20,854,016.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136,645.08 : 31,651,145.16 = 13,926,319.28 : x
  2. Step 2: Convert to fraction form
    21,136,645.08/31,651,145.16 = 13,926,319.28/x
  3. Step 3: Cross multiply
    21,136,645.08x = 31,651,145.16 × 13,926,319.28
  4. Step 4: Simplify right side
    21,136,645.08x = 440,783,953,075,786.69
  5. Step 5: Solve for x
    x = 440,783,953,075,786.69/21,136,645.08
  6. Step 6: Final answer
    x = 20,854,016.87

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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.