Home / 22,376.40-30,879.27-12,818.40

Finding the Fourth Proportional to 22,376.40, 30,879.27 and 12,818.40

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Solution

The fourth proportional to 22,376.40, 30,879.27 and 12,818.40 is: 17,689.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,376.40 : 30,879.27 = 12,818.40 : x
  2. Step 2: Convert to fraction form
    22,376.40/30,879.27 = 12,818.40/x
  3. Step 3: Cross multiply
    22,376.40x = 30,879.27 × 12,818.40
  4. Step 4: Simplify right side
    22,376.40x = 395,822,834.57
  5. Step 5: Solve for x
    x = 395,822,834.57/22,376.40
  6. Step 6: Final answer
    x = 17,689.30

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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.