Home / 27,984.15-38,615.67-15,884.51

Finding the Fourth Proportional to 27,984.15, 38,615.67 and 15,884.51

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Solution

The fourth proportional to 27,984.15, 38,615.67 and 15,884.51 is: 21,919.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,984.15 : 38,615.67 = 15,884.51 : x
  2. Step 2: Convert to fraction form
    27,984.15/38,615.67 = 15,884.51/x
  3. Step 3: Cross multiply
    27,984.15x = 38,615.67 × 15,884.51
  4. Step 4: Simplify right side
    27,984.15x = 613,390,803.19
  5. Step 5: Solve for x
    x = 613,390,803.19/27,984.15
  6. Step 6: Final answer
    x = 21,919.22

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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.