Home / 20,722,128.80-31,068,447.60-7,937,693.60

Finding the Fourth Proportional to 20,722,128.80, 31,068,447.60 and 7,937,693.60

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Solution

The fourth proportional to 20,722,128.80, 31,068,447.60 and 7,937,693.60 is: 11,900,892.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722,128.80 : 31,068,447.60 = 7,937,693.60 : x
  2. Step 2: Convert to fraction form
    20,722,128.80/31,068,447.60 = 7,937,693.60/x
  3. Step 3: Cross multiply
    20,722,128.80x = 31,068,447.60 × 7,937,693.60
  4. Step 4: Simplify right side
    20,722,128.80x = 246,611,817,676,455.38
  5. Step 5: Solve for x
    x = 246,611,817,676,455.38/20,722,128.80
  6. Step 6: Final answer
    x = 11,900,892.04

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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.