Home / 15,661.68-21,598.44-12,485.51

Finding the Fourth Proportional to 15,661.68, 21,598.44 and 12,485.51

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Solution

The fourth proportional to 15,661.68, 21,598.44 and 12,485.51 is: 17,218.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661.68 : 21,598.44 = 12,485.51 : x
  2. Step 2: Convert to fraction form
    15,661.68/21,598.44 = 12,485.51/x
  3. Step 3: Cross multiply
    15,661.68x = 21,598.44 × 12,485.51
  4. Step 4: Simplify right side
    15,661.68x = 269,667,538.60
  5. Step 5: Solve for x
    x = 269,667,538.60/15,661.68
  6. Step 6: Final answer
    x = 17,218.30

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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.