Home / 13,678.95-20,518.86-4,319.04

Finding the Fourth Proportional to 13,678.95, 20,518.86 and 4,319.04

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Solution

The fourth proportional to 13,678.95, 20,518.86 and 4,319.04 is: 6,478.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.95 : 20,518.86 = 4,319.04 : x
  2. Step 2: Convert to fraction form
    13,678.95/20,518.86 = 4,319.04/x
  3. Step 3: Cross multiply
    13,678.95x = 20,518.86 × 4,319.04
  4. Step 4: Simplify right side
    13,678.95x = 88,621,777.09
  5. Step 5: Solve for x
    x = 88,621,777.09/13,678.95
  6. Step 6: Final answer
    x = 6,478.70

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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.