Home / 21,065,904.96-31,607,985.39-7,428,795.36

Finding the Fourth Proportional to 21,065,904.96, 31,607,985.39 and 7,428,795.36

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Solution

The fourth proportional to 21,065,904.96, 31,607,985.39 and 7,428,795.36 is: 11,146,411.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,065,904.96 : 31,607,985.39 = 7,428,795.36 : x
  2. Step 2: Convert to fraction form
    21,065,904.96/31,607,985.39 = 7,428,795.36/x
  3. Step 3: Cross multiply
    21,065,904.96x = 31,607,985.39 × 7,428,795.36
  4. Step 4: Simplify right side
    21,065,904.96x = 234,809,255,204,179.81
  5. Step 5: Solve for x
    x = 234,809,255,204,179.81/21,065,904.96
  6. Step 6: Final answer
    x = 11,146,411.97

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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.