Home / 21,266,276.40-31,899,414.60-9,907,873.20

Finding the Fourth Proportional to 21,266,276.40, 31,899,414.60 and 9,907,873.20

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Solution

The fourth proportional to 21,266,276.40, 31,899,414.60 and 9,907,873.20 is: 14,861,809.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,266,276.40 : 31,899,414.60 = 9,907,873.20 : x
  2. Step 2: Convert to fraction form
    21,266,276.40/31,899,414.60 = 9,907,873.20/x
  3. Step 3: Cross multiply
    21,266,276.40x = 31,899,414.60 × 9,907,873.20
  4. Step 4: Simplify right side
    21,266,276.40x = 316,055,355,011,028.69
  5. Step 5: Solve for x
    x = 316,055,355,011,028.69/21,266,276.40
  6. Step 6: Final answer
    x = 14,861,809.80

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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.