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Finding the Fourth Proportional to 16,681,809.60, 25,041,376.80 and 12,912,004.80

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Solution

The fourth proportional to 16,681,809.60, 25,041,376.80 and 12,912,004.80 is: 19,382,452.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,681,809.60 : 25,041,376.80 = 12,912,004.80 : x
  2. Step 2: Convert to fraction form
    16,681,809.60/25,041,376.80 = 12,912,004.80/x
  3. Step 3: Cross multiply
    16,681,809.60x = 25,041,376.80 × 12,912,004.80
  4. Step 4: Simplify right side
    16,681,809.60x = 323,334,377,440,208.69
  5. Step 5: Solve for x
    x = 323,334,377,440,208.69/16,681,809.60
  6. Step 6: Final answer
    x = 19,382,452.22

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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.