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Finding the Fourth Proportional to 13,643.95, 20,465.93 and 4,283.93

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Solution

The fourth proportional to 13,643.95, 20,465.93 and 4,283.93 is: 6,425.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.95 : 20,465.93 = 4,283.93 : x
  2. Step 2: Convert to fraction form
    13,643.95/20,465.93 = 4,283.93/x
  3. Step 3: Cross multiply
    13,643.95x = 20,465.93 × 4,283.93
  4. Step 4: Simplify right side
    13,643.95x = 87,674,611.50
  5. Step 5: Solve for x
    x = 87,674,611.50/13,643.95
  6. Step 6: Final answer
    x = 6,425.90

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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.