Home / 13,788.03-20,681.62-8,203.99

Finding the Fourth Proportional to 13,788.03, 20,681.62 and 8,203.99

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Solution

The fourth proportional to 13,788.03, 20,681.62 and 8,203.99 is: 12,305.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.03 : 20,681.62 = 8,203.99 : x
  2. Step 2: Convert to fraction form
    13,788.03/20,681.62 = 8,203.99/x
  3. Step 3: Cross multiply
    13,788.03x = 20,681.62 × 8,203.99
  4. Step 4: Simplify right side
    13,788.03x = 169,671,803.66
  5. Step 5: Solve for x
    x = 169,671,803.66/13,788.03
  6. Step 6: Final answer
    x = 12,305.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.