Home / 13,143,694.16-18,137,650.20-7,341,320.72

Finding the Fourth Proportional to 13,143,694.16, 18,137,650.20 and 7,341,320.72

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Solution

The fourth proportional to 13,143,694.16, 18,137,650.20 and 7,341,320.72 is: 10,130,660.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143,694.16 : 18,137,650.20 = 7,341,320.72 : x
  2. Step 2: Convert to fraction form
    13,143,694.16/18,137,650.20 = 7,341,320.72/x
  3. Step 3: Cross multiply
    13,143,694.16x = 18,137,650.20 × 7,341,320.72
  4. Step 4: Simplify right side
    13,143,694.16x = 133,154,307,225,372.14
  5. Step 5: Solve for x
    x = 133,154,307,225,372.14/13,143,694.16
  6. Step 6: Final answer
    x = 10,130,660.80

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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.