Home / 21,782,628.66-30,069,331.44-15,507,207.12

Finding the Fourth Proportional to 21,782,628.66, 30,069,331.44 and 15,507,207.12

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Solution

The fourth proportional to 21,782,628.66, 30,069,331.44 and 15,507,207.12 is: 21,406,569.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,782,628.66 : 30,069,331.44 = 15,507,207.12 : x
  2. Step 2: Convert to fraction form
    21,782,628.66/30,069,331.44 = 15,507,207.12/x
  3. Step 3: Cross multiply
    21,782,628.66x = 30,069,331.44 × 15,507,207.12
  4. Step 4: Simplify right side
    21,782,628.66x = 466,291,350,600,007.88
  5. Step 5: Solve for x
    x = 466,291,350,600,007.88/21,782,628.66
  6. Step 6: Final answer
    x = 21,406,569.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.