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Finding the Fourth Proportional to 28,000.48, 41,978.04 and 10,467.76

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Solution

The fourth proportional to 28,000.48, 41,978.04 and 10,467.76 is: 15,693.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.48 : 41,978.04 = 10,467.76 : x
  2. Step 2: Convert to fraction form
    28,000.48/41,978.04 = 10,467.76/x
  3. Step 3: Cross multiply
    28,000.48x = 41,978.04 × 10,467.76
  4. Step 4: Simplify right side
    28,000.48x = 439,416,047.99
  5. Step 5: Solve for x
    x = 439,416,047.99/28,000.48
  6. Step 6: Final answer
    x = 15,693.16

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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.