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Finding the Fourth Proportional to 14,354.63, 19,815.47 and 13,457.87

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Solution

The fourth proportional to 14,354.63, 19,815.47 and 13,457.87 is: 18,577.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,354.63 : 19,815.47 = 13,457.87 : x
  2. Step 2: Convert to fraction form
    14,354.63/19,815.47 = 13,457.87/x
  3. Step 3: Cross multiply
    14,354.63x = 19,815.47 × 13,457.87
  4. Step 4: Simplify right side
    14,354.63x = 266,673,951.96
  5. Step 5: Solve for x
    x = 266,673,951.96/14,354.63
  6. Step 6: Final answer
    x = 18,577.56

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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.