Home / 30,071.55-45,129.20-13,450.35

Finding the Fourth Proportional to 30,071.55, 45,129.20 and 13,450.35

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Solution

The fourth proportional to 30,071.55, 45,129.20 and 13,450.35 is: 20,185.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,071.55 : 45,129.20 = 13,450.35 : x
  2. Step 2: Convert to fraction form
    30,071.55/45,129.20 = 13,450.35/x
  3. Step 3: Cross multiply
    30,071.55x = 45,129.20 × 13,450.35
  4. Step 4: Simplify right side
    30,071.55x = 607,003,535.22
  5. Step 5: Solve for x
    x = 607,003,535.22/30,071.55
  6. Step 6: Final answer
    x = 20,185.31

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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.