Home / 13,368.36-18,448.73-7,400.55

Finding the Fourth Proportional to 13,368.36, 18,448.73 and 7,400.55

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Solution

The fourth proportional to 13,368.36, 18,448.73 and 7,400.55 is: 10,212.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.36 : 18,448.73 = 7,400.55 : x
  2. Step 2: Convert to fraction form
    13,368.36/18,448.73 = 7,400.55/x
  3. Step 3: Cross multiply
    13,368.36x = 18,448.73 × 7,400.55
  4. Step 4: Simplify right side
    13,368.36x = 136,530,748.80
  5. Step 5: Solve for x
    x = 136,530,748.80/13,368.36
  6. Step 6: Final answer
    x = 10,212.98

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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.