Home / 21,712.14-29,965.68-12,280.50

Finding the Fourth Proportional to 21,712.14, 29,965.68 and 12,280.50

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Solution

The fourth proportional to 21,712.14, 29,965.68 and 12,280.50 is: 16,948.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712.14 : 29,965.68 = 12,280.50 : x
  2. Step 2: Convert to fraction form
    21,712.14/29,965.68 = 12,280.50/x
  3. Step 3: Cross multiply
    21,712.14x = 29,965.68 × 12,280.50
  4. Step 4: Simplify right side
    21,712.14x = 367,993,533.24
  5. Step 5: Solve for x
    x = 367,993,533.24/21,712.14
  6. Step 6: Final answer
    x = 16,948.75

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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.