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Finding the Fourth Proportional to 28,041, 38,696.58 and 15,465.75

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Solution

The fourth proportional to 28,041, 38,696.58 and 15,465.75 is: 21,342.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,041 : 38,696.58 = 15,465.75 : x
  2. Step 2: Convert to fraction form
    28,041/38,696.58 = 15,465.75/x
  3. Step 3: Cross multiply
    28,041x = 38,696.58 × 15,465.75
  4. Step 4: Simplify right side
    28,041x = 598,471,632.14
  5. Step 5: Solve for x
    x = 598,471,632.14/28,041
  6. Step 6: Final answer
    x = 21,342.74

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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.