Home / 28,071.07-38,739.54-16,138.42

Finding the Fourth Proportional to 28,071.07, 38,739.54 and 16,138.42

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Solution

The fourth proportional to 28,071.07, 38,739.54 and 16,138.42 is: 22,271.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,071.07 : 38,739.54 = 16,138.42 : x
  2. Step 2: Convert to fraction form
    28,071.07/38,739.54 = 16,138.42/x
  3. Step 3: Cross multiply
    28,071.07x = 38,739.54 × 16,138.42
  4. Step 4: Simplify right side
    28,071.07x = 625,194,967.13
  5. Step 5: Solve for x
    x = 625,194,967.13/28,071.07
  6. Step 6: Final answer
    x = 22,271.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.