Home / 20,647.93-28,498.68-13,575.01

Finding the Fourth Proportional to 20,647.93, 28,498.68 and 13,575.01

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Solution

The fourth proportional to 20,647.93, 28,498.68 and 13,575.01 is: 18,736.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.93 : 28,498.68 = 13,575.01 : x
  2. Step 2: Convert to fraction form
    20,647.93/28,498.68 = 13,575.01/x
  3. Step 3: Cross multiply
    20,647.93x = 28,498.68 × 13,575.01
  4. Step 4: Simplify right side
    20,647.93x = 386,869,865.99
  5. Step 5: Solve for x
    x = 386,869,865.99/20,647.93
  6. Step 6: Final answer
    x = 18,736.50

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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.