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Finding the Fourth Proportional to 14,969.48, 20,659.08 and 8,256.40

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Solution

The fourth proportional to 14,969.48, 20,659.08 and 8,256.40 is: 11,394.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,969.48 : 20,659.08 = 8,256.40 : x
  2. Step 2: Convert to fraction form
    14,969.48/20,659.08 = 8,256.40/x
  3. Step 3: Cross multiply
    14,969.48x = 20,659.08 × 8,256.40
  4. Step 4: Simplify right side
    14,969.48x = 170,569,628.11
  5. Step 5: Solve for x
    x = 170,569,628.11/14,969.48
  6. Step 6: Final answer
    x = 11,394.49

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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.