Home / 28,015.86-38,661.89-15,269.06

Finding the Fourth Proportional to 28,015.86, 38,661.89 and 15,269.06

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Solution

The fourth proportional to 28,015.86, 38,661.89 and 15,269.06 is: 21,071.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.86 : 38,661.89 = 15,269.06 : x
  2. Step 2: Convert to fraction form
    28,015.86/38,661.89 = 15,269.06/x
  3. Step 3: Cross multiply
    28,015.86x = 38,661.89 × 15,269.06
  4. Step 4: Simplify right side
    28,015.86x = 590,330,448.47
  5. Step 5: Solve for x
    x = 590,330,448.47/28,015.86
  6. Step 6: Final answer
    x = 21,071.29

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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.