Home / 27,915.60-41,873.40-7,139.10

Finding the Fourth Proportional to 27,915.60, 41,873.40 and 7,139.10

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Solution

The fourth proportional to 27,915.60, 41,873.40 and 7,139.10 is: 10,708.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,915.60 : 41,873.40 = 7,139.10 : x
  2. Step 2: Convert to fraction form
    27,915.60/41,873.40 = 7,139.10/x
  3. Step 3: Cross multiply
    27,915.60x = 41,873.40 × 7,139.10
  4. Step 4: Simplify right side
    27,915.60x = 298,938,389.94
  5. Step 5: Solve for x
    x = 298,938,389.94/27,915.60
  6. Step 6: Final answer
    x = 10,708.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.