Home / 13,682,156.39-18,881,377.55-7,487,204.45

Finding the Fourth Proportional to 13,682,156.39, 18,881,377.55 and 7,487,204.45

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Solution

The fourth proportional to 13,682,156.39, 18,881,377.55 and 7,487,204.45 is: 10,332,343.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,682,156.39 : 18,881,377.55 = 7,487,204.45 : x
  2. Step 2: Convert to fraction form
    13,682,156.39/18,881,377.55 = 7,487,204.45/x
  3. Step 3: Cross multiply
    13,682,156.39x = 18,881,377.55 × 7,487,204.45
  4. Step 4: Simplify right side
    13,682,156.39x = 141,368,733,938,801.22
  5. Step 5: Solve for x
    x = 141,368,733,938,801.22/13,682,156.39
  6. Step 6: Final answer
    x = 10,332,343.09

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.