Home / 21,308,015.40-31,962,023.10-7,124,591.40

Finding the Fourth Proportional to 21,308,015.40, 31,962,023.10 and 7,124,591.40

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Solution

The fourth proportional to 21,308,015.40, 31,962,023.10 and 7,124,591.40 is: 10,686,887.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308,015.40 : 31,962,023.10 = 7,124,591.40 : x
  2. Step 2: Convert to fraction form
    21,308,015.40/31,962,023.10 = 7,124,591.40/x
  3. Step 3: Cross multiply
    21,308,015.40x = 31,962,023.10 × 7,124,591.40
  4. Step 4: Simplify right side
    21,308,015.40x = 227,716,354,904,861.38
  5. Step 5: Solve for x
    x = 227,716,354,904,861.38/21,308,015.40
  6. Step 6: Final answer
    x = 10,686,887.10

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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.