Home / 13,529.54-18,669.15-7,478.97

Finding the Fourth Proportional to 13,529.54, 18,669.15 and 7,478.97

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Solution

The fourth proportional to 13,529.54, 18,669.15 and 7,478.97 is: 10,320.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,529.54 : 18,669.15 = 7,478.97 : x
  2. Step 2: Convert to fraction form
    13,529.54/18,669.15 = 7,478.97/x
  3. Step 3: Cross multiply
    13,529.54x = 18,669.15 × 7,478.97
  4. Step 4: Simplify right side
    13,529.54x = 139,625,987.08
  5. Step 5: Solve for x
    x = 139,625,987.08/13,529.54
  6. Step 6: Final answer
    x = 10,320.08

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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.