Home / 20,902,056.84-31,357,122.91-7,947,200.25

Finding the Fourth Proportional to 20,902,056.84, 31,357,122.91 and 7,947,200.25

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Solution

The fourth proportional to 20,902,056.84, 31,357,122.91 and 7,947,200.25 is: 11,922,335.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902,056.84 : 31,357,122.91 = 7,947,200.25 : x
  2. Step 2: Convert to fraction form
    20,902,056.84/31,357,122.91 = 7,947,200.25/x
  3. Step 3: Cross multiply
    20,902,056.84x = 31,357,122.91 × 7,947,200.25
  4. Step 4: Simplify right side
    20,902,056.84x = 249,201,335,009,764.72
  5. Step 5: Solve for x
    x = 249,201,335,009,764.72/20,902,056.84
  6. Step 6: Final answer
    x = 11,922,335.53

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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.