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Finding the Fourth Proportional to 13,368.67, 18,448.50 and 7,399.99

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Solution

The fourth proportional to 13,368.67, 18,448.50 and 7,399.99 is: 10,211.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.67 : 18,448.50 = 7,399.99 : x
  2. Step 2: Convert to fraction form
    13,368.67/18,448.50 = 7,399.99/x
  3. Step 3: Cross multiply
    13,368.67x = 18,448.50 × 7,399.99
  4. Step 4: Simplify right side
    13,368.67x = 136,518,715.52
  5. Step 5: Solve for x
    x = 136,518,715.52/13,368.67
  6. Step 6: Final answer
    x = 10,211.84

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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.