Home / 13,290.15-18,325.20-9,927.30

Finding the Fourth Proportional to 13,290.15, 18,325.20 and 9,927.30

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Solution

The fourth proportional to 13,290.15, 18,325.20 and 9,927.30 is: 13,688.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.15 : 18,325.20 = 9,927.30 : x
  2. Step 2: Convert to fraction form
    13,290.15/18,325.20 = 9,927.30/x
  3. Step 3: Cross multiply
    13,290.15x = 18,325.20 × 9,927.30
  4. Step 4: Simplify right side
    13,290.15x = 181,919,757.96
  5. Step 5: Solve for x
    x = 181,919,757.96/13,290.15
  6. Step 6: Final answer
    x = 13,688.31

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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.