Home / 20,726,915.40-31,043,133.90-12,223,859.40

Finding the Fourth Proportional to 20,726,915.40, 31,043,133.90 and 12,223,859.40

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Solution

The fourth proportional to 20,726,915.40, 31,043,133.90 and 12,223,859.40 is: 18,307,929.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726,915.40 : 31,043,133.90 = 12,223,859.40 : x
  2. Step 2: Convert to fraction form
    20,726,915.40/31,043,133.90 = 12,223,859.40/x
  3. Step 3: Cross multiply
    20,726,915.40x = 31,043,133.90 × 12,223,859.40
  4. Step 4: Simplify right side
    20,726,915.40x = 379,466,904,128,973.62
  5. Step 5: Solve for x
    x = 379,466,904,128,973.62/20,726,915.40
  6. Step 6: Final answer
    x = 18,307,929.41

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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.