Home / 19,215.40-28,823.10-12,982.45

Finding the Fourth Proportional to 19,215.40, 28,823.10 and 12,982.45

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Solution

The fourth proportional to 19,215.40, 28,823.10 and 12,982.45 is: 19,473.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215.40 : 28,823.10 = 12,982.45 : x
  2. Step 2: Convert to fraction form
    19,215.40/28,823.10 = 12,982.45/x
  3. Step 3: Cross multiply
    19,215.40x = 28,823.10 × 12,982.45
  4. Step 4: Simplify right side
    19,215.40x = 374,194,454.60
  5. Step 5: Solve for x
    x = 374,194,454.60/19,215.40
  6. Step 6: Final answer
    x = 19,473.68

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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.