Home / 21,768.85-30,035.77-13,808.17

Finding the Fourth Proportional to 21,768.85, 30,035.77 and 13,808.17

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Solution

The fourth proportional to 21,768.85, 30,035.77 and 13,808.17 is: 19,051.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,768.85 : 30,035.77 = 13,808.17 : x
  2. Step 2: Convert to fraction form
    21,768.85/30,035.77 = 13,808.17/x
  3. Step 3: Cross multiply
    21,768.85x = 30,035.77 × 13,808.17
  4. Step 4: Simplify right side
    21,768.85x = 414,739,018.24
  5. Step 5: Solve for x
    x = 414,739,018.24/21,768.85
  6. Step 6: Final answer
    x = 19,051.95

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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.