Home / 20,105,319.84-27,754,978.08-12,376,986.72

Finding the Fourth Proportional to 20,105,319.84, 27,754,978.08 and 12,376,986.72

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Solution

The fourth proportional to 20,105,319.84, 27,754,978.08 and 12,376,986.72 is: 17,086,174.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105,319.84 : 27,754,978.08 = 12,376,986.72 : x
  2. Step 2: Convert to fraction form
    20,105,319.84/27,754,978.08 = 12,376,986.72/x
  3. Step 3: Cross multiply
    20,105,319.84x = 27,754,978.08 × 12,376,986.72
  4. Step 4: Simplify right side
    20,105,319.84x = 343,522,995,110,051.12
  5. Step 5: Solve for x
    x = 343,522,995,110,051.12/20,105,319.84
  6. Step 6: Final answer
    x = 17,086,174.10

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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.