Home / 20,726,912.90-31,043,130.14-12,223,856.90

Finding the Fourth Proportional to 20,726,912.90, 31,043,130.14 and 12,223,856.90

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Solution

The fourth proportional to 20,726,912.90, 31,043,130.14 and 12,223,856.90 is: 18,307,925.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726,912.90 : 31,043,130.14 = 12,223,856.90 : x
  2. Step 2: Convert to fraction form
    20,726,912.90/31,043,130.14 = 12,223,856.90/x
  3. Step 3: Cross multiply
    20,726,912.90x = 31,043,130.14 × 12,223,856.90
  4. Step 4: Simplify right side
    20,726,912.90x = 379,466,780,559,437
  5. Step 5: Solve for x
    x = 379,466,780,559,437/20,726,912.90
  6. Step 6: Final answer
    x = 18,307,925.66

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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.