Home / 28,763.68-39,712.08-19,808.32

Finding the Fourth Proportional to 28,763.68, 39,712.08 and 19,808.32

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Solution

The fourth proportional to 28,763.68, 39,712.08 and 19,808.32 is: 27,348.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,763.68 : 39,712.08 = 19,808.32 : x
  2. Step 2: Convert to fraction form
    28,763.68/39,712.08 = 19,808.32/x
  3. Step 3: Cross multiply
    28,763.68x = 39,712.08 × 19,808.32
  4. Step 4: Simplify right side
    28,763.68x = 786,629,588.51
  5. Step 5: Solve for x
    x = 786,629,588.51/28,763.68
  6. Step 6: Final answer
    x = 27,348.02

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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.