Home / 21,300,688.80-31,972,028.40-10,530,151.20

Finding the Fourth Proportional to 21,300,688.80, 31,972,028.40 and 10,530,151.20

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Solution

The fourth proportional to 21,300,688.80, 31,972,028.40 and 10,530,151.20 is: 15,805,605.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300,688.80 : 31,972,028.40 = 10,530,151.20 : x
  2. Step 2: Convert to fraction form
    21,300,688.80/31,972,028.40 = 10,530,151.20/x
  3. Step 3: Cross multiply
    21,300,688.80x = 31,972,028.40 × 10,530,151.20
  4. Step 4: Simplify right side
    21,300,688.80x = 336,670,293,222,694.06
  5. Step 5: Solve for x
    x = 336,670,293,222,694.06/21,300,688.80
  6. Step 6: Final answer
    x = 15,805,605.93

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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.