Home / 13,581.32-18,716.40-12,695.18

Finding the Fourth Proportional to 13,581.32, 18,716.40 and 12,695.18

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Solution

The fourth proportional to 13,581.32, 18,716.40 and 12,695.18 is: 17,495.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.32 : 18,716.40 = 12,695.18 : x
  2. Step 2: Convert to fraction form
    13,581.32/18,716.40 = 12,695.18/x
  3. Step 3: Cross multiply
    13,581.32x = 18,716.40 × 12,695.18
  4. Step 4: Simplify right side
    13,581.32x = 237,607,973.37
  5. Step 5: Solve for x
    x = 237,607,973.37/13,581.32
  6. Step 6: Final answer
    x = 17,495.21

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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.