Home / 31,096.34-42,879.07-21,007.27

Finding the Fourth Proportional to 31,096.34, 42,879.07 and 21,007.27

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Solution

The fourth proportional to 31,096.34, 42,879.07 and 21,007.27 is: 28,967.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,096.34 : 42,879.07 = 21,007.27 : x
  2. Step 2: Convert to fraction form
    31,096.34/42,879.07 = 21,007.27/x
  3. Step 3: Cross multiply
    31,096.34x = 42,879.07 × 21,007.27
  4. Step 4: Simplify right side
    31,096.34x = 900,772,200.84
  5. Step 5: Solve for x
    x = 900,772,200.84/31,096.34
  6. Step 6: Final answer
    x = 28,967.15

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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.