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Finding the Fourth Proportional to 14,368.56, 19,826.68 and 8,401.20

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Solution

The fourth proportional to 14,368.56, 19,826.68 and 8,401.20 is: 11,592.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,368.56 : 19,826.68 = 8,401.20 : x
  2. Step 2: Convert to fraction form
    14,368.56/19,826.68 = 8,401.20/x
  3. Step 3: Cross multiply
    14,368.56x = 19,826.68 × 8,401.20
  4. Step 4: Simplify right side
    14,368.56x = 166,567,904.02
  5. Step 5: Solve for x
    x = 166,567,904.02/14,368.56
  6. Step 6: Final answer
    x = 11,592.53

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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.