Home / 20,486,505.70-30,720,901.20-10,247,409.10

Finding the Fourth Proportional to 20,486,505.70, 30,720,901.20 and 10,247,409.10

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Solution

The fourth proportional to 20,486,505.70, 30,720,901.20 and 10,247,409.10 is: 15,366,683.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486,505.70 : 30,720,901.20 = 10,247,409.10 : x
  2. Step 2: Convert to fraction form
    20,486,505.70/30,720,901.20 = 10,247,409.10/x
  3. Step 3: Cross multiply
    20,486,505.70x = 30,720,901.20 × 10,247,409.10
  4. Step 4: Simplify right side
    20,486,505.70x = 314,809,642,517,080.88
  5. Step 5: Solve for x
    x = 314,809,642,517,080.88/20,486,505.70
  6. Step 6: Final answer
    x = 15,366,683.18

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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.