Home / 13,188,468.40-19,787,368.20-12,721,908.40

Finding the Fourth Proportional to 13,188,468.40, 19,787,368.20 and 12,721,908.40

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Solution

The fourth proportional to 13,188,468.40, 19,787,368.20 and 12,721,908.40 is: 19,087,363.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188,468.40 : 19,787,368.20 = 12,721,908.40 : x
  2. Step 2: Convert to fraction form
    13,188,468.40/19,787,368.20 = 12,721,908.40/x
  3. Step 3: Cross multiply
    13,188,468.40x = 19,787,368.20 × 12,721,908.40
  4. Step 4: Simplify right side
    13,188,468.40x = 251,733,085,717,472.88
  5. Step 5: Solve for x
    x = 251,733,085,717,472.88/13,188,468.40
  6. Step 6: Final answer
    x = 19,087,363.15

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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.