Home / 28,718.13-43,106.36-18,162.21

Finding the Fourth Proportional to 28,718.13, 43,106.36 and 18,162.21

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Solution

The fourth proportional to 28,718.13, 43,106.36 and 18,162.21 is: 27,261.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.13 : 43,106.36 = 18,162.21 : x
  2. Step 2: Convert to fraction form
    28,718.13/43,106.36 = 18,162.21/x
  3. Step 3: Cross multiply
    28,718.13x = 43,106.36 × 18,162.21
  4. Step 4: Simplify right side
    28,718.13x = 782,906,762.66
  5. Step 5: Solve for x
    x = 782,906,762.66/28,718.13
  6. Step 6: Final answer
    x = 27,261.76

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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.