Home / 28,851.39-39,800.67-18,785.72

Finding the Fourth Proportional to 28,851.39, 39,800.67 and 18,785.72

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Solution

The fourth proportional to 28,851.39, 39,800.67 and 18,785.72 is: 25,915.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,851.39 : 39,800.67 = 18,785.72 : x
  2. Step 2: Convert to fraction form
    28,851.39/39,800.67 = 18,785.72/x
  3. Step 3: Cross multiply
    28,851.39x = 39,800.67 × 18,785.72
  4. Step 4: Simplify right side
    28,851.39x = 747,684,271.49
  5. Step 5: Solve for x
    x = 747,684,271.49/28,851.39
  6. Step 6: Final answer
    x = 25,915.02

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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.