Home / 13,429.53-18,533.08-7,379.72

Finding the Fourth Proportional to 13,429.53, 18,533.08 and 7,379.72

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Solution

The fourth proportional to 13,429.53, 18,533.08 and 7,379.72 is: 10,184.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.53 : 18,533.08 = 7,379.72 : x
  2. Step 2: Convert to fraction form
    13,429.53/18,533.08 = 7,379.72/x
  3. Step 3: Cross multiply
    13,429.53x = 18,533.08 × 7,379.72
  4. Step 4: Simplify right side
    13,429.53x = 136,768,922.69
  5. Step 5: Solve for x
    x = 136,768,922.69/13,429.53
  6. Step 6: Final answer
    x = 10,184.19

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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.