Home / 13,235.19-18,257.67-10,720.14

Finding the Fourth Proportional to 13,235.19, 18,257.67 and 10,720.14

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Solution

The fourth proportional to 13,235.19, 18,257.67 and 10,720.14 is: 14,788.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,235.19 : 18,257.67 = 10,720.14 : x
  2. Step 2: Convert to fraction form
    13,235.19/18,257.67 = 10,720.14/x
  3. Step 3: Cross multiply
    13,235.19x = 18,257.67 × 10,720.14
  4. Step 4: Simplify right side
    13,235.19x = 195,724,633.58
  5. Step 5: Solve for x
    x = 195,724,633.58/13,235.19
  6. Step 6: Final answer
    x = 14,788.21

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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.