Home / 28,256.06-38,985.48-20,192.15

Finding the Fourth Proportional to 28,256.06, 38,985.48 and 20,192.15

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Solution

The fourth proportional to 28,256.06, 38,985.48 and 20,192.15 is: 27,859.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,256.06 : 38,985.48 = 20,192.15 : x
  2. Step 2: Convert to fraction form
    28,256.06/38,985.48 = 20,192.15/x
  3. Step 3: Cross multiply
    28,256.06x = 38,985.48 × 20,192.15
  4. Step 4: Simplify right side
    28,256.06x = 787,200,465.05
  5. Step 5: Solve for x
    x = 787,200,465.05/28,256.06
  6. Step 6: Final answer
    x = 27,859.53

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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.