Home / 20,681,189.28-31,035,954.24-7,218,017.28

Finding the Fourth Proportional to 20,681,189.28, 31,035,954.24 and 7,218,017.28

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Solution

The fourth proportional to 20,681,189.28, 31,035,954.24 and 7,218,017.28 is: 10,831,971.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681,189.28 : 31,035,954.24 = 7,218,017.28 : x
  2. Step 2: Convert to fraction form
    20,681,189.28/31,035,954.24 = 7,218,017.28/x
  3. Step 3: Cross multiply
    20,681,189.28x = 31,035,954.24 × 7,218,017.28
  4. Step 4: Simplify right side
    20,681,189.28x = 224,018,054,005,609.25
  5. Step 5: Solve for x
    x = 224,018,054,005,609.25/20,681,189.28
  6. Step 6: Final answer
    x = 10,831,971.56

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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.