Home / 20,966,661.60-28,935,183.96-12,596,591.40

Finding the Fourth Proportional to 20,966,661.60, 28,935,183.96 and 12,596,591.40

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Solution

The fourth proportional to 20,966,661.60, 28,935,183.96 and 12,596,591.40 is: 17,384,011.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966,661.60 : 28,935,183.96 = 12,596,591.40 : x
  2. Step 2: Convert to fraction form
    20,966,661.60/28,935,183.96 = 12,596,591.40/x
  3. Step 3: Cross multiply
    20,966,661.60x = 28,935,183.96 × 12,596,591.40
  4. Step 4: Simplify right side
    20,966,661.60x = 364,484,689,427,953.94
  5. Step 5: Solve for x
    x = 364,484,689,427,953.94/20,966,661.60
  6. Step 6: Final answer
    x = 17,384,011.65

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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.