Home / 15,372,051.20-21,213,060.72-8,402,415.92

Finding the Fourth Proportional to 15,372,051.20, 21,213,060.72 and 8,402,415.92

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Solution

The fourth proportional to 15,372,051.20, 21,213,060.72 and 8,402,415.92 is: 11,595,131.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,372,051.20 : 21,213,060.72 = 8,402,415.92 : x
  2. Step 2: Convert to fraction form
    15,372,051.20/21,213,060.72 = 8,402,415.92/x
  3. Step 3: Cross multiply
    15,372,051.20x = 21,213,060.72 × 8,402,415.92
  4. Step 4: Simplify right side
    15,372,051.20x = 178,240,959,105,654.66
  5. Step 5: Solve for x
    x = 178,240,959,105,654.66/15,372,051.20
  6. Step 6: Final answer
    x = 11,595,131.76

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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.