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Finding the Fourth Proportional to 12,696,839.20, 19,045,258.80 and 9,463,578.40

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Solution

The fourth proportional to 12,696,839.20, 19,045,258.80 and 9,463,578.40 is: 14,195,367.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696,839.20 : 19,045,258.80 = 9,463,578.40 : x
  2. Step 2: Convert to fraction form
    12,696,839.20/19,045,258.80 = 9,463,578.40/x
  3. Step 3: Cross multiply
    12,696,839.20x = 19,045,258.80 × 9,463,578.40
  4. Step 4: Simplify right side
    12,696,839.20x = 180,236,299,802,089.94
  5. Step 5: Solve for x
    x = 180,236,299,802,089.94/12,696,839.20
  6. Step 6: Final answer
    x = 14,195,367.60

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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.