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Finding the Fourth Proportional to 13,242.84, 18,275.04 and 7,653.84

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Solution

The fourth proportional to 13,242.84, 18,275.04 and 7,653.84 is: 10,562.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.84 : 18,275.04 = 7,653.84 : x
  2. Step 2: Convert to fraction form
    13,242.84/18,275.04 = 7,653.84/x
  3. Step 3: Cross multiply
    13,242.84x = 18,275.04 × 7,653.84
  4. Step 4: Simplify right side
    13,242.84x = 139,874,232.15
  5. Step 5: Solve for x
    x = 139,874,232.15/13,242.84
  6. Step 6: Final answer
    x = 10,562.25

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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.