Home / 18,966,142.42-28,420,476.27-12,553,421.02

Finding the Fourth Proportional to 18,966,142.42, 28,420,476.27 and 12,553,421.02

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Solution

The fourth proportional to 18,966,142.42, 28,420,476.27 and 12,553,421.02 is: 18,811,110.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,966,142.42 : 28,420,476.27 = 12,553,421.02 : x
  2. Step 2: Convert to fraction form
    18,966,142.42/28,420,476.27 = 12,553,421.02/x
  3. Step 3: Cross multiply
    18,966,142.42x = 28,420,476.27 × 12,553,421.02
  4. Step 4: Simplify right side
    18,966,142.42x = 356,774,204,206,229.19
  5. Step 5: Solve for x
    x = 356,774,204,206,229.19/18,966,142.42
  6. Step 6: Final answer
    x = 18,811,110.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.