Home / 13,427.61-18,533.46-7,765.66

Finding the Fourth Proportional to 13,427.61, 18,533.46 and 7,765.66

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Solution

The fourth proportional to 13,427.61, 18,533.46 and 7,765.66 is: 10,718.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.61 : 18,533.46 = 7,765.66 : x
  2. Step 2: Convert to fraction form
    13,427.61/18,533.46 = 7,765.66/x
  3. Step 3: Cross multiply
    13,427.61x = 18,533.46 × 7,765.66
  4. Step 4: Simplify right side
    13,427.61x = 143,924,548.98
  5. Step 5: Solve for x
    x = 143,924,548.98/13,427.61
  6. Step 6: Final answer
    x = 10,718.55

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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.