Home / 14,431.35-19,920.18-8,460.84

Finding the Fourth Proportional to 14,431.35, 19,920.18 and 8,460.84

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Solution

The fourth proportional to 14,431.35, 19,920.18 and 8,460.84 is: 11,678.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,431.35 : 19,920.18 = 8,460.84 : x
  2. Step 2: Convert to fraction form
    14,431.35/19,920.18 = 8,460.84/x
  3. Step 3: Cross multiply
    14,431.35x = 19,920.18 × 8,460.84
  4. Step 4: Simplify right side
    14,431.35x = 168,541,455.75
  5. Step 5: Solve for x
    x = 168,541,455.75/14,431.35
  6. Step 6: Final answer
    x = 11,678.84

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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.