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Finding the Fourth Proportional to 13,281, 18,320.88 and 10,765.94

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Solution

The fourth proportional to 13,281, 18,320.88 and 10,765.94 is: 14,851.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281 : 18,320.88 = 10,765.94 : x
  2. Step 2: Convert to fraction form
    13,281/18,320.88 = 10,765.94/x
  3. Step 3: Cross multiply
    13,281x = 18,320.88 × 10,765.94
  4. Step 4: Simplify right side
    13,281x = 197,241,494.83
  5. Step 5: Solve for x
    x = 197,241,494.83/13,281
  6. Step 6: Final answer
    x = 14,851.40

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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.