Home / 20,591,876.40-28,416,711.45-11,299,601.94

Finding the Fourth Proportional to 20,591,876.40, 28,416,711.45 and 11,299,601.94

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Solution

The fourth proportional to 20,591,876.40, 28,416,711.45 and 11,299,601.94 is: 15,593,407.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591,876.40 : 28,416,711.45 = 11,299,601.94 : x
  2. Step 2: Convert to fraction form
    20,591,876.40/28,416,711.45 = 11,299,601.94/x
  3. Step 3: Cross multiply
    20,591,876.40x = 28,416,711.45 × 11,299,601.94
  4. Step 4: Simplify right side
    20,591,876.40x = 321,097,527,828,840.19
  5. Step 5: Solve for x
    x = 321,097,527,828,840.19/20,591,876.40
  6. Step 6: Final answer
    x = 15,593,407.89

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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.