Home / 20,400,825.32-30,580,791.74-9,478,688.12

Finding the Fourth Proportional to 20,400,825.32, 30,580,791.74 and 9,478,688.12

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Solution

The fourth proportional to 20,400,825.32, 30,580,791.74 and 9,478,688.12 is: 14,208,532.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400,825.32 : 30,580,791.74 = 9,478,688.12 : x
  2. Step 2: Convert to fraction form
    20,400,825.32/30,580,791.74 = 9,478,688.12/x
  3. Step 3: Cross multiply
    20,400,825.32x = 30,580,791.74 × 9,478,688.12
  4. Step 4: Simplify right side
    20,400,825.32x = 289,865,787,366,132.06
  5. Step 5: Solve for x
    x = 289,865,787,366,132.06/20,400,825.32
  6. Step 6: Final answer
    x = 14,208,532.39

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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.