Home / 14,113.60-21,170.40-8,942.40

Finding the Fourth Proportional to 14,113.60, 21,170.40 and 8,942.40

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Solution

The fourth proportional to 14,113.60, 21,170.40 and 8,942.40 is: 13,413.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,113.60 : 21,170.40 = 8,942.40 : x
  2. Step 2: Convert to fraction form
    14,113.60/21,170.40 = 8,942.40/x
  3. Step 3: Cross multiply
    14,113.60x = 21,170.40 × 8,942.40
  4. Step 4: Simplify right side
    14,113.60x = 189,314,184.96
  5. Step 5: Solve for x
    x = 189,314,184.96/14,113.60
  6. Step 6: Final answer
    x = 13,413.60

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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.