Home / 20,993,880.20-31,490,820.30-8,877,025.40

Finding the Fourth Proportional to 20,993,880.20, 31,490,820.30 and 8,877,025.40

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Solution

The fourth proportional to 20,993,880.20, 31,490,820.30 and 8,877,025.40 is: 13,315,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993,880.20 : 31,490,820.30 = 8,877,025.40 : x
  2. Step 2: Convert to fraction form
    20,993,880.20/31,490,820.30 = 8,877,025.40/x
  3. Step 3: Cross multiply
    20,993,880.20x = 31,490,820.30 × 8,877,025.40
  4. Step 4: Simplify right side
    20,993,880.20x = 279,544,811,669,935.62
  5. Step 5: Solve for x
    x = 279,544,811,669,935.62/20,993,880.20
  6. Step 6: Final answer
    x = 13,315,538.10

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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.