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Finding the Fourth Proportional to 14,354.56, 19,807.36 and 8,387.20

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Solution

The fourth proportional to 14,354.56, 19,807.36 and 8,387.20 is: 11,573.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,354.56 : 19,807.36 = 8,387.20 : x
  2. Step 2: Convert to fraction form
    14,354.56/19,807.36 = 8,387.20/x
  3. Step 3: Cross multiply
    14,354.56x = 19,807.36 × 8,387.20
  4. Step 4: Simplify right side
    14,354.56x = 166,128,289.79
  5. Step 5: Solve for x
    x = 166,128,289.79/14,354.56
  6. Step 6: Final answer
    x = 11,573.21

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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.