Home / 21,279,920.40-31,919,880.60-14,897,379.60

Finding the Fourth Proportional to 21,279,920.40, 31,919,880.60 and 14,897,379.60

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Solution

The fourth proportional to 21,279,920.40, 31,919,880.60 and 14,897,379.60 is: 22,346,069.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279,920.40 : 31,919,880.60 = 14,897,379.60 : x
  2. Step 2: Convert to fraction form
    21,279,920.40/31,919,880.60 = 14,897,379.60/x
  3. Step 3: Cross multiply
    21,279,920.40x = 31,919,880.60 × 14,897,379.60
  4. Step 4: Simplify right side
    21,279,920.40x = 475,522,578,084,875.75
  5. Step 5: Solve for x
    x = 475,522,578,084,875.75/21,279,920.40
  6. Step 6: Final answer
    x = 22,346,069.40

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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.