Home / 21,000,453.15-31,500,679.73-18,848,117.10

Finding the Fourth Proportional to 21,000,453.15, 31,500,679.73 and 18,848,117.10

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Solution

The fourth proportional to 21,000,453.15, 31,500,679.73 and 18,848,117.10 is: 28,272,175.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,453.15 : 31,500,679.73 = 18,848,117.10 : x
  2. Step 2: Convert to fraction form
    21,000,453.15/31,500,679.73 = 18,848,117.10/x
  3. Step 3: Cross multiply
    21,000,453.15x = 31,500,679.73 × 18,848,117.10
  4. Step 4: Simplify right side
    21,000,453.15x = 593,728,500,186,395.88
  5. Step 5: Solve for x
    x = 593,728,500,186,395.88/21,000,453.15
  6. Step 6: Final answer
    x = 28,272,175.65

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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.