Home / 38,421,996.31-53,022,196.35-20,780,918.56

Finding the Fourth Proportional to 38,421,996.31, 53,022,196.35 and 20,780,918.56

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Solution

The fourth proportional to 38,421,996.31, 53,022,196.35 and 20,780,918.56 is: 28,677,581.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421,996.31 : 53,022,196.35 = 20,780,918.56 : x
  2. Step 2: Convert to fraction form
    38,421,996.31/53,022,196.35 = 20,780,918.56/x
  3. Step 3: Cross multiply
    38,421,996.31x = 53,022,196.35 × 20,780,918.56
  4. Step 4: Simplify right side
    38,421,996.31x = 1,101,849,944,089,123.88
  5. Step 5: Solve for x
    x = 1,101,849,944,089,123.88/38,421,996.31
  6. Step 6: Final answer
    x = 28,677,581.85

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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.