Home / 13,765,290.40-18,996,585.78-7,885,973.44

Finding the Fourth Proportional to 13,765,290.40, 18,996,585.78 and 7,885,973.44

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Solution

The fourth proportional to 13,765,290.40, 18,996,585.78 and 7,885,973.44 is: 10,882,921.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765,290.40 : 18,996,585.78 = 7,885,973.44 : x
  2. Step 2: Convert to fraction form
    13,765,290.40/18,996,585.78 = 7,885,973.44/x
  3. Step 3: Cross multiply
    13,765,290.40x = 18,996,585.78 × 7,885,973.44
  4. Step 4: Simplify right side
    13,765,290.40x = 149,806,570,911,761.69
  5. Step 5: Solve for x
    x = 149,806,570,911,761.69/13,765,290.40
  6. Step 6: Final answer
    x = 10,882,921.21

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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.