Home / 14,993.08-20,690.45-8,278.72

Finding the Fourth Proportional to 14,993.08, 20,690.45 and 8,278.72

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Solution

The fourth proportional to 14,993.08, 20,690.45 and 8,278.72 is: 11,424.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,993.08 : 20,690.45 = 8,278.72 : x
  2. Step 2: Convert to fraction form
    14,993.08/20,690.45 = 8,278.72/x
  3. Step 3: Cross multiply
    14,993.08x = 20,690.45 × 8,278.72
  4. Step 4: Simplify right side
    14,993.08x = 171,290,543.10
  5. Step 5: Solve for x
    x = 171,290,543.10/14,993.08
  6. Step 6: Final answer
    x = 11,424.64

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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.