Home / 21,853.41-30,148.89-12,648.92

Finding the Fourth Proportional to 21,853.41, 30,148.89 and 12,648.92

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Solution

The fourth proportional to 21,853.41, 30,148.89 and 12,648.92 is: 17,450.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,853.41 : 30,148.89 = 12,648.92 : x
  2. Step 2: Convert to fraction form
    21,853.41/30,148.89 = 12,648.92/x
  3. Step 3: Cross multiply
    21,853.41x = 30,148.89 × 12,648.92
  4. Step 4: Simplify right side
    21,853.41x = 381,350,746.95
  5. Step 5: Solve for x
    x = 381,350,746.95/21,853.41
  6. Step 6: Final answer
    x = 17,450.40

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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.