Home / 12,157,931.40-18,234,564.30-3,638,545.80

Finding the Fourth Proportional to 12,157,931.40, 18,234,564.30 and 3,638,545.80

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Solution

The fourth proportional to 12,157,931.40, 18,234,564.30 and 3,638,545.80 is: 5,457,120.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157,931.40 : 18,234,564.30 = 3,638,545.80 : x
  2. Step 2: Convert to fraction form
    12,157,931.40/18,234,564.30 = 3,638,545.80/x
  3. Step 3: Cross multiply
    12,157,931.40x = 18,234,564.30 × 3,638,545.80
  4. Step 4: Simplify right side
    12,157,931.40x = 66,347,297,348,594.94
  5. Step 5: Solve for x
    x = 66,347,297,348,594.94/12,157,931.40
  6. Step 6: Final answer
    x = 5,457,120.55

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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.