Home / 13,417.13-18,507.20-8,643.26

Finding the Fourth Proportional to 13,417.13, 18,507.20 and 8,643.26

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Solution

The fourth proportional to 13,417.13, 18,507.20 and 8,643.26 is: 11,922.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,417.13 : 18,507.20 = 8,643.26 : x
  2. Step 2: Convert to fraction form
    13,417.13/18,507.20 = 8,643.26/x
  3. Step 3: Cross multiply
    13,417.13x = 18,507.20 × 8,643.26
  4. Step 4: Simplify right side
    13,417.13x = 159,962,498.26
  5. Step 5: Solve for x
    x = 159,962,498.26/13,417.13
  6. Step 6: Final answer
    x = 11,922.26

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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.