Home / 28,145.06-38,823.26-18,585.03

Finding the Fourth Proportional to 28,145.06, 38,823.26 and 18,585.03

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Solution

The fourth proportional to 28,145.06, 38,823.26 and 18,585.03 is: 25,636.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.06 : 38,823.26 = 18,585.03 : x
  2. Step 2: Convert to fraction form
    28,145.06/38,823.26 = 18,585.03/x
  3. Step 3: Cross multiply
    28,145.06x = 38,823.26 × 18,585.03
  4. Step 4: Simplify right side
    28,145.06x = 721,531,358.87
  5. Step 5: Solve for x
    x = 721,531,358.87/28,145.06
  6. Step 6: Final answer
    x = 25,636.17

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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.