Home / 13,221,762.64-18,247,812.90-7,420,861.72

Finding the Fourth Proportional to 13,221,762.64, 18,247,812.90 and 7,420,861.72

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Solution

The fourth proportional to 13,221,762.64, 18,247,812.90 and 7,420,861.72 is: 10,241,788.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221,762.64 : 18,247,812.90 = 7,420,861.72 : x
  2. Step 2: Convert to fraction form
    13,221,762.64/18,247,812.90 = 7,420,861.72/x
  3. Step 3: Cross multiply
    13,221,762.64x = 18,247,812.90 × 7,420,861.72
  4. Step 4: Simplify right side
    13,221,762.64x = 135,414,496,223,332.17
  5. Step 5: Solve for x
    x = 135,414,496,223,332.17/13,221,762.64
  6. Step 6: Final answer
    x = 10,241,788.47

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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.