Home / 9,905.88-13,666.23-5,655.78

Finding the Fourth Proportional to 9,905.88, 13,666.23 and 5,655.78

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Solution

The fourth proportional to 9,905.88, 13,666.23 and 5,655.78 is: 7,802.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.88 : 13,666.23 = 5,655.78 : x
  2. Step 2: Convert to fraction form
    9,905.88/13,666.23 = 5,655.78/x
  3. Step 3: Cross multiply
    9,905.88x = 13,666.23 × 5,655.78
  4. Step 4: Simplify right side
    9,905.88x = 77,293,190.31
  5. Step 5: Solve for x
    x = 77,293,190.31/9,905.88
  6. Step 6: Final answer
    x = 7,802.76

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1.5x scale

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.