Home / 21,314,999.60-31,972,499.40-7,857,076.40

Finding the Fourth Proportional to 21,314,999.60, 31,972,499.40 and 7,857,076.40

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Solution

The fourth proportional to 21,314,999.60, 31,972,499.40 and 7,857,076.40 is: 11,785,614.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314,999.60 : 31,972,499.40 = 7,857,076.40 : x
  2. Step 2: Convert to fraction form
    21,314,999.60/31,972,499.40 = 7,857,076.40/x
  3. Step 3: Cross multiply
    21,314,999.60x = 31,972,499.40 × 7,857,076.40
  4. Step 4: Simplify right side
    21,314,999.60x = 251,210,370,484,754.16
  5. Step 5: Solve for x
    x = 251,210,370,484,754.16/21,314,999.60
  6. Step 6: Final answer
    x = 11,785,614.60

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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.