Home / 13,678.95-20,519.91-4,319.22

Finding the Fourth Proportional to 13,678.95, 20,519.91 and 4,319.22

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Solution

The fourth proportional to 13,678.95, 20,519.91 and 4,319.22 is: 6,479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.95 : 20,519.91 = 4,319.22 : x
  2. Step 2: Convert to fraction form
    13,678.95/20,519.91 = 4,319.22/x
  3. Step 3: Cross multiply
    13,678.95x = 20,519.91 × 4,319.22
  4. Step 4: Simplify right side
    13,678.95x = 88,630,005.67
  5. Step 5: Solve for x
    x = 88,630,005.67/13,678.95
  6. Step 6: Final answer
    x = 6,479.30

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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.