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Finding the Fourth Proportional to 14,260.51, 19,678.94 and 7,886.68

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Solution

The fourth proportional to 14,260.51, 19,678.94 and 7,886.68 is: 10,883.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,260.51 : 19,678.94 = 7,886.68 : x
  2. Step 2: Convert to fraction form
    14,260.51/19,678.94 = 7,886.68/x
  3. Step 3: Cross multiply
    14,260.51x = 19,678.94 × 7,886.68
  4. Step 4: Simplify right side
    14,260.51x = 155,201,443.46
  5. Step 5: Solve for x
    x = 155,201,443.46/14,260.51
  6. Step 6: Final answer
    x = 10,883.30

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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.