Home / 20,742,466.40-31,113,699.60-9,980,786.15

Finding the Fourth Proportional to 20,742,466.40, 31,113,699.60 and 9,980,786.15

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Solution

The fourth proportional to 20,742,466.40, 31,113,699.60 and 9,980,786.15 is: 14,971,179.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742,466.40 : 31,113,699.60 = 9,980,786.15 : x
  2. Step 2: Convert to fraction form
    20,742,466.40/31,113,699.60 = 9,980,786.15/x
  3. Step 3: Cross multiply
    20,742,466.40x = 31,113,699.60 × 9,980,786.15
  4. Step 4: Simplify right side
    20,742,466.40x = 310,539,182,042,940.56
  5. Step 5: Solve for x
    x = 310,539,182,042,940.56/20,742,466.40
  6. Step 6: Final answer
    x = 14,971,179.23

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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.