Home / 15,215,331.08-20,999,309.96-9,415,980.56

Finding the Fourth Proportional to 15,215,331.08, 20,999,309.96 and 9,415,980.56

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Solution

The fourth proportional to 15,215,331.08, 20,999,309.96 and 9,415,980.56 is: 12,995,385.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215,331.08 : 20,999,309.96 = 9,415,980.56 : x
  2. Step 2: Convert to fraction form
    15,215,331.08/20,999,309.96 = 9,415,980.56/x
  3. Step 3: Cross multiply
    15,215,331.08x = 20,999,309.96 × 9,415,980.56
  4. Step 4: Simplify right side
    15,215,331.08x = 197,729,094,356,774.41
  5. Step 5: Solve for x
    x = 197,729,094,356,774.41/15,215,331.08
  6. Step 6: Final answer
    x = 12,995,385.60

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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.