Home / 20,965.08-28,931.62-12,014.20

Finding the Fourth Proportional to 20,965.08, 28,931.62 and 12,014.20

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Solution

The fourth proportional to 20,965.08, 28,931.62 and 12,014.20 is: 16,579.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965.08 : 28,931.62 = 12,014.20 : x
  2. Step 2: Convert to fraction form
    20,965.08/28,931.62 = 12,014.20/x
  3. Step 3: Cross multiply
    20,965.08x = 28,931.62 × 12,014.20
  4. Step 4: Simplify right side
    20,965.08x = 347,590,269.00
  5. Step 5: Solve for x
    x = 347,590,269.00/20,965.08
  6. Step 6: Final answer
    x = 16,579.49

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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.