Home / 12,590,490.40-18,913,729.20-12,114,599.20

Finding the Fourth Proportional to 12,590,490.40, 18,913,729.20 and 12,114,599.20

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Solution

The fourth proportional to 12,590,490.40, 18,913,729.20 and 12,114,599.20 is: 18,198,834.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590,490.40 : 18,913,729.20 = 12,114,599.20 : x
  2. Step 2: Convert to fraction form
    12,590,490.40/18,913,729.20 = 12,114,599.20/x
  3. Step 3: Cross multiply
    12,590,490.40x = 18,913,729.20 × 12,114,599.20
  4. Step 4: Simplify right side
    12,590,490.40x = 229,132,248,635,336.62
  5. Step 5: Solve for x
    x = 229,132,248,635,336.62/12,590,490.40
  6. Step 6: Final answer
    x = 18,198,834.31

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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.