Home / 20,941,960.80-28,905,037.68-12,800,024.16

Finding the Fourth Proportional to 20,941,960.80, 28,905,037.68 and 12,800,024.16

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Solution

The fourth proportional to 20,941,960.80, 28,905,037.68 and 12,800,024.16 is: 17,667,169.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941,960.80 : 28,905,037.68 = 12,800,024.16 : x
  2. Step 2: Convert to fraction form
    20,941,960.80/28,905,037.68 = 12,800,024.16/x
  3. Step 3: Cross multiply
    20,941,960.80x = 28,905,037.68 × 12,800,024.16
  4. Step 4: Simplify right side
    20,941,960.80x = 369,985,180,649,710.38
  5. Step 5: Solve for x
    x = 369,985,180,649,710.38/20,941,960.80
  6. Step 6: Final answer
    x = 17,667,169.96

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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.