Home / 28,214.07-38,916.90-18,126.60

Finding the Fourth Proportional to 28,214.07, 38,916.90 and 18,126.60

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Solution

The fourth proportional to 28,214.07, 38,916.90 and 18,126.60 is: 25,002.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,214.07 : 38,916.90 = 18,126.60 : x
  2. Step 2: Convert to fraction form
    28,214.07/38,916.90 = 18,126.60/x
  3. Step 3: Cross multiply
    28,214.07x = 38,916.90 × 18,126.60
  4. Step 4: Simplify right side
    28,214.07x = 705,431,079.54
  5. Step 5: Solve for x
    x = 705,431,079.54/28,214.07
  6. Step 6: Final answer
    x = 25,002.81

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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.