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Finding the Fourth Proportional to 18,829.76, 28,254.54 and 8,967.20

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Solution

The fourth proportional to 18,829.76, 28,254.54 and 8,967.20 is: 13,455.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,829.76 : 28,254.54 = 8,967.20 : x
  2. Step 2: Convert to fraction form
    18,829.76/28,254.54 = 8,967.20/x
  3. Step 3: Cross multiply
    18,829.76x = 28,254.54 × 8,967.20
  4. Step 4: Simplify right side
    18,829.76x = 253,364,111.09
  5. Step 5: Solve for x
    x = 253,364,111.09/18,829.76
  6. Step 6: Final answer
    x = 13,455.51

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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.