Home / 20,061,920.10-30,092,880.15-12,887,466.60

Finding the Fourth Proportional to 20,061,920.10, 30,092,880.15 and 12,887,466.60

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Solution

The fourth proportional to 20,061,920.10, 30,092,880.15 and 12,887,466.60 is: 19,331,199.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,061,920.10 : 30,092,880.15 = 12,887,466.60 : x
  2. Step 2: Convert to fraction form
    20,061,920.10/30,092,880.15 = 12,887,466.60/x
  3. Step 3: Cross multiply
    20,061,920.10x = 30,092,880.15 × 12,887,466.60
  4. Step 4: Simplify right side
    20,061,920.10x = 387,820,987,830,927.94
  5. Step 5: Solve for x
    x = 387,820,987,830,927.94/20,061,920.10
  6. Step 6: Final answer
    x = 19,331,199.90

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1.5x scale

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.