Home / 13,328.03-18,392.91-8,620.51

Finding the Fourth Proportional to 13,328.03, 18,392.91 and 8,620.51

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Solution

The fourth proportional to 13,328.03, 18,392.91 and 8,620.51 is: 11,896.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.03 : 18,392.91 = 8,620.51 : x
  2. Step 2: Convert to fraction form
    13,328.03/18,392.91 = 8,620.51/x
  3. Step 3: Cross multiply
    13,328.03x = 18,392.91 × 8,620.51
  4. Step 4: Simplify right side
    13,328.03x = 158,556,264.58
  5. Step 5: Solve for x
    x = 158,556,264.58/13,328.03
  6. Step 6: Final answer
    x = 11,896.45

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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.