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Finding the Fourth Proportional to 13,950.72, 19,245.60 and 8,913.60

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Solution

The fourth proportional to 13,950.72, 19,245.60 and 8,913.60 is: 12,296.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,950.72 : 19,245.60 = 8,913.60 : x
  2. Step 2: Convert to fraction form
    13,950.72/19,245.60 = 8,913.60/x
  3. Step 3: Cross multiply
    13,950.72x = 19,245.60 × 8,913.60
  4. Step 4: Simplify right side
    13,950.72x = 171,547,580.16
  5. Step 5: Solve for x
    x = 171,547,580.16/13,950.72
  6. Step 6: Final answer
    x = 12,296.68

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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.