Home / 21,276,079.60-31,914,119.40-20,940,156.40

Finding the Fourth Proportional to 21,276,079.60, 31,914,119.40 and 20,940,156.40

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Solution

The fourth proportional to 21,276,079.60, 31,914,119.40 and 20,940,156.40 is: 31,410,234.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276,079.60 : 31,914,119.40 = 20,940,156.40 : x
  2. Step 2: Convert to fraction form
    21,276,079.60/31,914,119.40 = 20,940,156.40/x
  3. Step 3: Cross multiply
    21,276,079.60x = 31,914,119.40 × 20,940,156.40
  4. Step 4: Simplify right side
    21,276,079.60x = 668,286,651,604,274.12
  5. Step 5: Solve for x
    x = 668,286,651,604,274.12/21,276,079.60
  6. Step 6: Final answer
    x = 31,410,234.60

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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.