Home / 19,789,619.20-29,684,428.80-7,011,415.60

Finding the Fourth Proportional to 19,789,619.20, 29,684,428.80 and 7,011,415.60

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Solution

The fourth proportional to 19,789,619.20, 29,684,428.80 and 7,011,415.60 is: 10,517,123.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,789,619.20 : 29,684,428.80 = 7,011,415.60 : x
  2. Step 2: Convert to fraction form
    19,789,619.20/29,684,428.80 = 7,011,415.60/x
  3. Step 3: Cross multiply
    19,789,619.20x = 29,684,428.80 × 7,011,415.60
  4. Step 4: Simplify right side
    19,789,619.20x = 208,129,867,165,409.28
  5. Step 5: Solve for x
    x = 208,129,867,165,409.28/19,789,619.20
  6. Step 6: Final answer
    x = 10,517,123.40

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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.