Home / 19,928,276.80-29,892,415.20-12,747,918.40

Finding the Fourth Proportional to 19,928,276.80, 29,892,415.20 and 12,747,918.40

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Solution

The fourth proportional to 19,928,276.80, 29,892,415.20 and 12,747,918.40 is: 19,121,877.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,928,276.80 : 29,892,415.20 = 12,747,918.40 : x
  2. Step 2: Convert to fraction form
    19,928,276.80/29,892,415.20 = 12,747,918.40/x
  3. Step 3: Cross multiply
    19,928,276.80x = 29,892,415.20 × 12,747,918.40
  4. Step 4: Simplify right side
    19,928,276.80x = 381,066,069,748,519.69
  5. Step 5: Solve for x
    x = 381,066,069,748,519.69/19,928,276.80
  6. Step 6: Final answer
    x = 19,121,877.60

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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.