Home / 13,288,840.20-19,955,378.70-7,309,499.40

Finding the Fourth Proportional to 13,288,840.20, 19,955,378.70 and 7,309,499.40

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Solution

The fourth proportional to 13,288,840.20, 19,955,378.70 and 7,309,499.40 is: 10,976,415.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288,840.20 : 19,955,378.70 = 7,309,499.40 : x
  2. Step 2: Convert to fraction form
    13,288,840.20/19,955,378.70 = 7,309,499.40/x
  3. Step 3: Cross multiply
    13,288,840.20x = 19,955,378.70 × 7,309,499.40
  4. Step 4: Simplify right side
    13,288,840.20x = 145,863,828,634,422.78
  5. Step 5: Solve for x
    x = 145,863,828,634,422.78/13,288,840.20
  6. Step 6: Final answer
    x = 10,976,415.28

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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.