Home / 20,742,641.40-31,113,962.10-19,481,892.60

Finding the Fourth Proportional to 20,742,641.40, 31,113,962.10 and 19,481,892.60

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Solution

The fourth proportional to 20,742,641.40, 31,113,962.10 and 19,481,892.60 is: 29,222,838.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742,641.40 : 31,113,962.10 = 19,481,892.60 : x
  2. Step 2: Convert to fraction form
    20,742,641.40/31,113,962.10 = 19,481,892.60/x
  3. Step 3: Cross multiply
    20,742,641.40x = 31,113,962.10 × 19,481,892.60
  4. Step 4: Simplify right side
    20,742,641.40x = 606,158,867,992,670.50
  5. Step 5: Solve for x
    x = 606,158,867,992,670.50/20,742,641.40
  6. Step 6: Final answer
    x = 29,222,838.90

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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.