Home / 20,522,592.09-28,286,661.09-15,559,389.84

Finding the Fourth Proportional to 20,522,592.09, 28,286,661.09 and 15,559,389.84

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Solution

The fourth proportional to 20,522,592.09, 28,286,661.09 and 15,559,389.84 is: 21,445,789.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522,592.09 : 28,286,661.09 = 15,559,389.84 : x
  2. Step 2: Convert to fraction form
    20,522,592.09/28,286,661.09 = 15,559,389.84/x
  3. Step 3: Cross multiply
    20,522,592.09x = 28,286,661.09 × 15,559,389.84
  4. Step 4: Simplify right side
    20,522,592.09x = 440,123,187,171,269.31
  5. Step 5: Solve for x
    x = 440,123,187,171,269.31/20,522,592.09
  6. Step 6: Final answer
    x = 21,445,789.36

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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.