Home / 28,011,656.52-38,656,008.32-15,621,761.58

Finding the Fourth Proportional to 28,011,656.52, 38,656,008.32 and 15,621,761.58

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Solution

The fourth proportional to 28,011,656.52, 38,656,008.32 and 15,621,761.58 is: 21,557,987.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011,656.52 : 38,656,008.32 = 15,621,761.58 : x
  2. Step 2: Convert to fraction form
    28,011,656.52/38,656,008.32 = 15,621,761.58/x
  3. Step 3: Cross multiply
    28,011,656.52x = 38,656,008.32 × 15,621,761.58
  4. Step 4: Simplify right side
    28,011,656.52x = 603,874,945,609,536.38
  5. Step 5: Solve for x
    x = 603,874,945,609,536.38/28,011,656.52
  6. Step 6: Final answer
    x = 21,557,987.66

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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.