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Finding the Fourth Proportional to 14,773.79, 20,368.36 and 11,374.63

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Solution

The fourth proportional to 14,773.79, 20,368.36 and 11,374.63 is: 15,681.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,773.79 : 20,368.36 = 11,374.63 : x
  2. Step 2: Convert to fraction form
    14,773.79/20,368.36 = 11,374.63/x
  3. Step 3: Cross multiply
    14,773.79x = 20,368.36 × 11,374.63
  4. Step 4: Simplify right side
    14,773.79x = 231,682,522.00
  5. Step 5: Solve for x
    x = 231,682,522.00/14,773.79
  6. Step 6: Final answer
    x = 15,681.99

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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.