Home / 13,230.71-18,258.50-7,181.00

Finding the Fourth Proportional to 13,230.71, 18,258.50 and 7,181.00

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Solution

The fourth proportional to 13,230.71, 18,258.50 and 7,181.00 is: 9,909.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,230.71 : 18,258.50 = 7,181.00 : x
  2. Step 2: Convert to fraction form
    13,230.71/18,258.50 = 7,181.00/x
  3. Step 3: Cross multiply
    13,230.71x = 18,258.50 × 7,181.00
  4. Step 4: Simplify right side
    13,230.71x = 131,114,352.10
  5. Step 5: Solve for x
    x = 131,114,352.10/13,230.71
  6. Step 6: Final answer
    x = 9,909.85

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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.