Home / 20,365,689.28-28,105,660.11-12,633,223

Finding the Fourth Proportional to 20,365,689.28, 28,105,660.11 and 12,633,223

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Solution

The fourth proportional to 20,365,689.28, 28,105,660.11 and 12,633,223 is: 17,434,473.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365,689.28 : 28,105,660.11 = 12,633,223 : x
  2. Step 2: Convert to fraction form
    20,365,689.28/28,105,660.11 = 12,633,223/x
  3. Step 3: Cross multiply
    20,365,689.28x = 28,105,660.11 × 12,633,223
  4. Step 4: Simplify right side
    20,365,689.28x = 355,065,071,731,834.50
  5. Step 5: Solve for x
    x = 355,065,071,731,834.50/20,365,689.28
  6. Step 6: Final answer
    x = 17,434,473.58

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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.