Home / 28,173.16-38,905.29-18,119.05

Finding the Fourth Proportional to 28,173.16, 38,905.29 and 18,119.05

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Solution

The fourth proportional to 28,173.16, 38,905.29 and 18,119.05 is: 25,021.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,173.16 : 38,905.29 = 18,119.05 : x
  2. Step 2: Convert to fraction form
    28,173.16/38,905.29 = 18,119.05/x
  3. Step 3: Cross multiply
    28,173.16x = 38,905.29 × 18,119.05
  4. Step 4: Simplify right side
    28,173.16x = 704,926,894.77
  5. Step 5: Solve for x
    x = 704,926,894.77/28,173.16
  6. Step 6: Final answer
    x = 25,021.22

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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.