Home / 21,129,816.60-31,694,724.90-10,348,781.40

Finding the Fourth Proportional to 21,129,816.60, 31,694,724.90 and 10,348,781.40

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Solution

The fourth proportional to 21,129,816.60, 31,694,724.90 and 10,348,781.40 is: 15,523,172.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,129,816.60 : 31,694,724.90 = 10,348,781.40 : x
  2. Step 2: Convert to fraction form
    21,129,816.60/31,694,724.90 = 10,348,781.40/x
  3. Step 3: Cross multiply
    21,129,816.60x = 31,694,724.90 × 10,348,781.40
  4. Step 4: Simplify right side
    21,129,816.60x = 328,001,779,523,236.88
  5. Step 5: Solve for x
    x = 328,001,779,523,236.88/21,129,816.60
  6. Step 6: Final answer
    x = 15,523,172.10

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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.