Home / 20,742,648.40-31,113,972.60-19,481,899.60

Finding the Fourth Proportional to 20,742,648.40, 31,113,972.60 and 19,481,899.60

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Solution

The fourth proportional to 20,742,648.40, 31,113,972.60 and 19,481,899.60 is: 29,222,849.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742,648.40 : 31,113,972.60 = 19,481,899.60 : x
  2. Step 2: Convert to fraction form
    20,742,648.40/31,113,972.60 = 19,481,899.60/x
  3. Step 3: Cross multiply
    20,742,648.40x = 31,113,972.60 × 19,481,899.60
  4. Step 4: Simplify right side
    20,742,648.40x = 606,159,290,350,351
  5. Step 5: Solve for x
    x = 606,159,290,350,351/20,742,648.40
  6. Step 6: Final answer
    x = 29,222,849.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.