Home / 12,878,851.20-19,318,276.80-6,906,883.20

Finding the Fourth Proportional to 12,878,851.20, 19,318,276.80 and 6,906,883.20

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Solution

The fourth proportional to 12,878,851.20, 19,318,276.80 and 6,906,883.20 is: 10,360,324.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878,851.20 : 19,318,276.80 = 6,906,883.20 : x
  2. Step 2: Convert to fraction form
    12,878,851.20/19,318,276.80 = 6,906,883.20/x
  3. Step 3: Cross multiply
    12,878,851.20x = 19,318,276.80 × 6,906,883.20
  4. Step 4: Simplify right side
    12,878,851.20x = 133,429,081,482,869.77
  5. Step 5: Solve for x
    x = 133,429,081,482,869.77/12,878,851.20
  6. Step 6: Final answer
    x = 10,360,324.80

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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.