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Finding the Fourth Proportional to 14,186.84, 19,579.08 and 7,900.40

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Solution

The fourth proportional to 14,186.84, 19,579.08 and 7,900.40 is: 10,903.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,186.84 : 19,579.08 = 7,900.40 : x
  2. Step 2: Convert to fraction form
    14,186.84/19,579.08 = 7,900.40/x
  3. Step 3: Cross multiply
    14,186.84x = 19,579.08 × 7,900.40
  4. Step 4: Simplify right side
    14,186.84x = 154,682,563.63
  5. Step 5: Solve for x
    x = 154,682,563.63/14,186.84
  6. Step 6: Final answer
    x = 10,903.24

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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.