Home / 20,677,648.72-28,538,364-12,422,306.92

Finding the Fourth Proportional to 20,677,648.72, 28,538,364 and 12,422,306.92

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Solution

The fourth proportional to 20,677,648.72, 28,538,364 and 12,422,306.92 is: 17,144,711.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677,648.72 : 28,538,364 = 12,422,306.92 : x
  2. Step 2: Convert to fraction form
    20,677,648.72/28,538,364 = 12,422,306.92/x
  3. Step 3: Cross multiply
    20,677,648.72x = 28,538,364 × 12,422,306.92
  4. Step 4: Simplify right side
    20,677,648.72x = 354,512,316,602,678.88
  5. Step 5: Solve for x
    x = 354,512,316,602,678.88/20,677,648.72
  6. Step 6: Final answer
    x = 17,144,711.25

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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.