Home / 13,416.69-18,515.64-7,448.45

Finding the Fourth Proportional to 13,416.69, 18,515.64 and 7,448.45

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Solution

The fourth proportional to 13,416.69, 18,515.64 and 7,448.45 is: 10,279.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.69 : 18,515.64 = 7,448.45 : x
  2. Step 2: Convert to fraction form
    13,416.69/18,515.64 = 7,448.45/x
  3. Step 3: Cross multiply
    13,416.69x = 18,515.64 × 7,448.45
  4. Step 4: Simplify right side
    13,416.69x = 137,912,726.18
  5. Step 5: Solve for x
    x = 137,912,726.18/13,416.69
  6. Step 6: Final answer
    x = 10,279.19

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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.