Home / 21,008,729.40-31,495,598.10-8,887,500.60

Finding the Fourth Proportional to 21,008,729.40, 31,495,598.10 and 8,887,500.60

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Solution

The fourth proportional to 21,008,729.40, 31,495,598.10 and 8,887,500.60 is: 13,323,849.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008,729.40 : 31,495,598.10 = 8,887,500.60 : x
  2. Step 2: Convert to fraction form
    21,008,729.40/31,495,598.10 = 8,887,500.60/x
  3. Step 3: Cross multiply
    21,008,729.40x = 31,495,598.10 × 8,887,500.60
  4. Step 4: Simplify right side
    21,008,729.40x = 279,917,147,011,108.88
  5. Step 5: Solve for x
    x = 279,917,147,011,108.88/21,008,729.40
  6. Step 6: Final answer
    x = 13,323,849.42

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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.