Home / 13,150,640.21-18,148,443.95-7,349,421.78

Finding the Fourth Proportional to 13,150,640.21, 18,148,443.95 and 7,349,421.78

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Solution

The fourth proportional to 13,150,640.21, 18,148,443.95 and 7,349,421.78 is: 10,142,515.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,150,640.21 : 18,148,443.95 = 7,349,421.78 : x
  2. Step 2: Convert to fraction form
    13,150,640.21/18,148,443.95 = 7,349,421.78/x
  3. Step 3: Cross multiply
    13,150,640.21x = 18,148,443.95 × 7,349,421.78
  4. Step 4: Simplify right side
    13,150,640.21x = 133,380,569,196,244.34
  5. Step 5: Solve for x
    x = 133,380,569,196,244.34/13,150,640.21
  6. Step 6: Final answer
    x = 10,142,515.28

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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.