Home / 19,486.04-29,208.54-8,390.12

Finding the Fourth Proportional to 19,486.04, 29,208.54 and 8,390.12

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Solution

The fourth proportional to 19,486.04, 29,208.54 and 8,390.12 is: 12,576.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,486.04 : 29,208.54 = 8,390.12 : x
  2. Step 2: Convert to fraction form
    19,486.04/29,208.54 = 8,390.12/x
  3. Step 3: Cross multiply
    19,486.04x = 29,208.54 × 8,390.12
  4. Step 4: Simplify right side
    19,486.04x = 245,063,155.62
  5. Step 5: Solve for x
    x = 245,063,155.62/19,486.04
  6. Step 6: Final answer
    x = 12,576.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.