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Finding the Fourth Proportional to 20,210,652.40, 30,315,978.60 and 9,448,972.15

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Solution

The fourth proportional to 20,210,652.40, 30,315,978.60 and 9,448,972.15 is: 14,173,458.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210,652.40 : 30,315,978.60 = 9,448,972.15 : x
  2. Step 2: Convert to fraction form
    20,210,652.40/30,315,978.60 = 9,448,972.15/x
  3. Step 3: Cross multiply
    20,210,652.40x = 30,315,978.60 × 9,448,972.15
  4. Step 4: Simplify right side
    20,210,652.40x = 286,454,837,491,396
  5. Step 5: Solve for x
    x = 286,454,837,491,396/20,210,652.40
  6. Step 6: Final answer
    x = 14,173,458.23

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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.