Home / 20,123,559.78-27,769,111.65-11,421,909.60

Finding the Fourth Proportional to 20,123,559.78, 27,769,111.65 and 11,421,909.60

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Solution

The fourth proportional to 20,123,559.78, 27,769,111.65 and 11,421,909.60 is: 15,761,440.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123,559.78 : 27,769,111.65 = 11,421,909.60 : x
  2. Step 2: Convert to fraction form
    20,123,559.78/27,769,111.65 = 11,421,909.60/x
  3. Step 3: Cross multiply
    20,123,559.78x = 27,769,111.65 × 11,421,909.60
  4. Step 4: Simplify right side
    20,123,559.78x = 317,176,282,938,606.81
  5. Step 5: Solve for x
    x = 317,176,282,938,606.81/20,123,559.78
  6. Step 6: Final answer
    x = 15,761,440.14

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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.