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Finding the Fourth Proportional to 18,885.02, 28,332.99 and 8,354.63

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Solution

The fourth proportional to 18,885.02, 28,332.99 and 8,354.63 is: 12,534.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.02 : 28,332.99 = 8,354.63 : x
  2. Step 2: Convert to fraction form
    18,885.02/28,332.99 = 8,354.63/x
  3. Step 3: Cross multiply
    18,885.02x = 28,332.99 × 8,354.63
  4. Step 4: Simplify right side
    18,885.02x = 236,711,648.24
  5. Step 5: Solve for x
    x = 236,711,648.24/18,885.02
  6. Step 6: Final answer
    x = 12,534.36

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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.