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Finding the Fourth Proportional to 13,669.60, 18,864.08 and 7,701.26

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Solution

The fourth proportional to 13,669.60, 18,864.08 and 7,701.26 is: 10,627.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,669.60 : 18,864.08 = 7,701.26 : x
  2. Step 2: Convert to fraction form
    13,669.60/18,864.08 = 7,701.26/x
  3. Step 3: Cross multiply
    13,669.60x = 18,864.08 × 7,701.26
  4. Step 4: Simplify right side
    13,669.60x = 145,277,184.74
  5. Step 5: Solve for x
    x = 145,277,184.74/13,669.60
  6. Step 6: Final answer
    x = 10,627.76

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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.