Home / 13,640,411.60-20,468,490.60-5,121,609.20

Finding the Fourth Proportional to 13,640,411.60, 20,468,490.60 and 5,121,609.20

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Solution

The fourth proportional to 13,640,411.60, 20,468,490.60 and 5,121,609.20 is: 7,685,369.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640,411.60 : 20,468,490.60 = 5,121,609.20 : x
  2. Step 2: Convert to fraction form
    13,640,411.60/20,468,490.60 = 5,121,609.20/x
  3. Step 3: Cross multiply
    13,640,411.60x = 20,468,490.60 × 5,121,609.20
  4. Step 4: Simplify right side
    13,640,411.60x = 104,831,609,767,073.53
  5. Step 5: Solve for x
    x = 104,831,609,767,073.53/13,640,411.60
  6. Step 6: Final answer
    x = 7,685,369.98

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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.