Home / 13,451.40-20,172.30-4,686.60

Finding the Fourth Proportional to 13,451.40, 20,172.30 and 4,686.60

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Solution

The fourth proportional to 13,451.40, 20,172.30 and 4,686.60 is: 7,028.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.40 : 20,172.30 = 4,686.60 : x
  2. Step 2: Convert to fraction form
    13,451.40/20,172.30 = 4,686.60/x
  3. Step 3: Cross multiply
    13,451.40x = 20,172.30 × 4,686.60
  4. Step 4: Simplify right side
    13,451.40x = 94,539,501.18
  5. Step 5: Solve for x
    x = 94,539,501.18/13,451.40
  6. Step 6: Final answer
    x = 7,028.23

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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.