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Finding the Fourth Proportional to 13,906,473.60, 20,859,710.40 and 7,104,028.80

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Solution

The fourth proportional to 13,906,473.60, 20,859,710.40 and 7,104,028.80 is: 10,656,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906,473.60 : 20,859,710.40 = 7,104,028.80 : x
  2. Step 2: Convert to fraction form
    13,906,473.60/20,859,710.40 = 7,104,028.80/x
  3. Step 3: Cross multiply
    13,906,473.60x = 20,859,710.40 × 7,104,028.80
  4. Step 4: Simplify right side
    13,906,473.60x = 148,187,983,441,259.50
  5. Step 5: Solve for x
    x = 148,187,983,441,259.50/13,906,473.60
  6. Step 6: Final answer
    x = 10,656,043.20

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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.