Home / 28,470.29-39,291.21-20,951.19

Finding the Fourth Proportional to 28,470.29, 39,291.21 and 20,951.19

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Solution

The fourth proportional to 28,470.29, 39,291.21 and 20,951.19 is: 28,914.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,470.29 : 39,291.21 = 20,951.19 : x
  2. Step 2: Convert to fraction form
    28,470.29/39,291.21 = 20,951.19/x
  3. Step 3: Cross multiply
    28,470.29x = 39,291.21 × 20,951.19
  4. Step 4: Simplify right side
    28,470.29x = 823,197,606.04
  5. Step 5: Solve for x
    x = 823,197,606.04/28,470.29
  6. Step 6: Final answer
    x = 28,914.27

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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.