Home / 38,781-58,172.04-11,079

Finding the Fourth Proportional to 38,781, 58,172.04 and 11,079

Calculator

Solution

The fourth proportional to 38,781, 58,172.04 and 11,079 is: 16,618.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,781 : 58,172.04 = 11,079 : x
  2. Step 2: Convert to fraction form
    38,781/58,172.04 = 11,079/x
  3. Step 3: Cross multiply
    38,781x = 58,172.04 × 11,079
  4. Step 4: Simplify right side
    38,781x = 644,488,031.16
  5. Step 5: Solve for x
    x = 644,488,031.16/38,781
  6. Step 6: Final answer
    x = 16,618.65

Related Problems

Find fourth proportional to 19,390.50, 29,086.02 and 5,539.50
Half scale
Find fourth proportional to 77,562, 116,344.08 and 22,158
Double scale
Find fourth proportional to 38,782, 58,173.54 and 11,080
Similar ratio
Find fourth proportional to 58,171.50, 87,258.06 and 16,618.50
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.