Home / 13,528.99-18,669.46-7,863.70

Finding the Fourth Proportional to 13,528.99, 18,669.46 and 7,863.70

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Solution

The fourth proportional to 13,528.99, 18,669.46 and 7,863.70 is: 10,851.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,528.99 : 18,669.46 = 7,863.70 : x
  2. Step 2: Convert to fraction form
    13,528.99/18,669.46 = 7,863.70/x
  3. Step 3: Cross multiply
    13,528.99x = 18,669.46 × 7,863.70
  4. Step 4: Simplify right side
    13,528.99x = 146,811,032.60
  5. Step 5: Solve for x
    x = 146,811,032.60/13,528.99
  6. Step 6: Final answer
    x = 10,851.59

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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.