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Finding the Fourth Proportional to 13,736.19, 18,955.95 and 7,448.57

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Solution

The fourth proportional to 13,736.19, 18,955.95 and 7,448.57 is: 10,279.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,736.19 : 18,955.95 = 7,448.57 : x
  2. Step 2: Convert to fraction form
    13,736.19/18,955.95 = 7,448.57/x
  3. Step 3: Cross multiply
    13,736.19x = 18,955.95 × 7,448.57
  4. Step 4: Simplify right side
    13,736.19x = 141,194,625.71
  5. Step 5: Solve for x
    x = 141,194,625.71/13,736.19
  6. Step 6: Final answer
    x = 10,279.02

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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.