Home / 21,101,122.60-31,651,683.90-12,598,066.60

Finding the Fourth Proportional to 21,101,122.60, 31,651,683.90 and 12,598,066.60

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Solution

The fourth proportional to 21,101,122.60, 31,651,683.90 and 12,598,066.60 is: 18,897,099.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101,122.60 : 31,651,683.90 = 12,598,066.60 : x
  2. Step 2: Convert to fraction form
    21,101,122.60/31,651,683.90 = 12,598,066.60/x
  3. Step 3: Cross multiply
    21,101,122.60x = 31,651,683.90 × 12,598,066.60
  4. Step 4: Simplify right side
    21,101,122.60x = 398,750,021,774,347.69
  5. Step 5: Solve for x
    x = 398,750,021,774,347.69/21,101,122.60
  6. Step 6: Final answer
    x = 18,897,099.90

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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.