Home / 19,071.40-28,615.20-9,205.60

Finding the Fourth Proportional to 19,071.40, 28,615.20 and 9,205.60

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Solution

The fourth proportional to 19,071.40, 28,615.20 and 9,205.60 is: 13,812.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,071.40 : 28,615.20 = 9,205.60 : x
  2. Step 2: Convert to fraction form
    19,071.40/28,615.20 = 9,205.60/x
  3. Step 3: Cross multiply
    19,071.40x = 28,615.20 × 9,205.60
  4. Step 4: Simplify right side
    19,071.40x = 263,420,085.12
  5. Step 5: Solve for x
    x = 263,420,085.12/19,071.40
  6. Step 6: Final answer
    x = 13,812.31

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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.