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Finding the Fourth Proportional to 28,823.16, 39,774.06 and 16,247.64

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Solution

The fourth proportional to 28,823.16, 39,774.06 and 16,247.64 is: 22,420.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,823.16 : 39,774.06 = 16,247.64 : x
  2. Step 2: Convert to fraction form
    28,823.16/39,774.06 = 16,247.64/x
  3. Step 3: Cross multiply
    28,823.16x = 39,774.06 × 16,247.64
  4. Step 4: Simplify right side
    28,823.16x = 646,234,608.22
  5. Step 5: Solve for x
    x = 646,234,608.22/28,823.16
  6. Step 6: Final answer
    x = 22,420.67

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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.