Home / 13,143,210.86-18,230,423.52-12,793,640.78

Finding the Fourth Proportional to 13,143,210.86, 18,230,423.52 and 12,793,640.78

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Solution

The fourth proportional to 13,143,210.86, 18,230,423.52 and 12,793,640.78 is: 17,745,548.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143,210.86 : 18,230,423.52 = 12,793,640.78 : x
  2. Step 2: Convert to fraction form
    13,143,210.86/18,230,423.52 = 12,793,640.78/x
  3. Step 3: Cross multiply
    13,143,210.86x = 18,230,423.52 × 12,793,640.78
  4. Step 4: Simplify right side
    13,143,210.86x = 233,233,489,690,991.03
  5. Step 5: Solve for x
    x = 233,233,489,690,991.03/13,143,210.86
  6. Step 6: Final answer
    x = 17,745,548.81

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.