Home / 28,727.25-39,643.79-16,788.20

Finding the Fourth Proportional to 28,727.25, 39,643.79 and 16,788.20

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Solution

The fourth proportional to 28,727.25, 39,643.79 and 16,788.20 is: 23,167.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,727.25 : 39,643.79 = 16,788.20 : x
  2. Step 2: Convert to fraction form
    28,727.25/39,643.79 = 16,788.20/x
  3. Step 3: Cross multiply
    28,727.25x = 39,643.79 × 16,788.20
  4. Step 4: Simplify right side
    28,727.25x = 665,547,875.28
  5. Step 5: Solve for x
    x = 665,547,875.28/28,727.25
  6. Step 6: Final answer
    x = 23,167.82

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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.