Home / 20,831,405.40-31,247,108.10-5,686,867.80

Finding the Fourth Proportional to 20,831,405.40, 31,247,108.10 and 5,686,867.80

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Solution

The fourth proportional to 20,831,405.40, 31,247,108.10 and 5,686,867.80 is: 8,530,301.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831,405.40 : 31,247,108.10 = 5,686,867.80 : x
  2. Step 2: Convert to fraction form
    20,831,405.40/31,247,108.10 = 5,686,867.80/x
  3. Step 3: Cross multiply
    20,831,405.40x = 31,247,108.10 × 5,686,867.80
  4. Step 4: Simplify right side
    20,831,405.40x = 177,698,172,897,009.19
  5. Step 5: Solve for x
    x = 177,698,172,897,009.19/20,831,405.40
  6. Step 6: Final answer
    x = 8,530,301.70

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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.