Home / 12,983.56-19,465.80-8,813.20

Finding the Fourth Proportional to 12,983.56, 19,465.80 and 8,813.20

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Solution

The fourth proportional to 12,983.56, 19,465.80 and 8,813.20 is: 13,213.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,983.56 : 19,465.80 = 8,813.20 : x
  2. Step 2: Convert to fraction form
    12,983.56/19,465.80 = 8,813.20/x
  3. Step 3: Cross multiply
    12,983.56x = 19,465.80 × 8,813.20
  4. Step 4: Simplify right side
    12,983.56x = 171,555,988.56
  5. Step 5: Solve for x
    x = 171,555,988.56/12,983.56
  6. Step 6: Final answer
    x = 13,213.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.