Home / 28,233.09-38,960.69-15,659.01

Finding the Fourth Proportional to 28,233.09, 38,960.69 and 15,659.01

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Solution

The fourth proportional to 28,233.09, 38,960.69 and 15,659.01 is: 21,608.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,233.09 : 38,960.69 = 15,659.01 : x
  2. Step 2: Convert to fraction form
    28,233.09/38,960.69 = 15,659.01/x
  3. Step 3: Cross multiply
    28,233.09x = 38,960.69 × 15,659.01
  4. Step 4: Simplify right side
    28,233.09x = 610,085,756.02
  5. Step 5: Solve for x
    x = 610,085,756.02/28,233.09
  6. Step 6: Final answer
    x = 21,608.89

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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.