Home / 10,287,309.80-15,415,218.30-9,720,439.40

Finding the Fourth Proportional to 10,287,309.80, 15,415,218.30 and 9,720,439.40

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Solution

The fourth proportional to 10,287,309.80, 15,415,218.30 and 9,720,439.40 is: 14,565,780.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287,309.80 : 15,415,218.30 = 9,720,439.40 : x
  2. Step 2: Convert to fraction form
    10,287,309.80/15,415,218.30 = 9,720,439.40/x
  3. Step 3: Cross multiply
    10,287,309.80x = 15,415,218.30 × 9,720,439.40
  4. Step 4: Simplify right side
    10,287,309.80x = 149,842,695,322,921.03
  5. Step 5: Solve for x
    x = 149,842,695,322,921.03/10,287,309.80
  6. Step 6: Final answer
    x = 14,565,780.39

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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.