Home / 12,818.12-19,210.98-6,880.28

Finding the Fourth Proportional to 12,818.12, 19,210.98 and 6,880.28

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Solution

The fourth proportional to 12,818.12, 19,210.98 and 6,880.28 is: 10,311.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.12 : 19,210.98 = 6,880.28 : x
  2. Step 2: Convert to fraction form
    12,818.12/19,210.98 = 6,880.28/x
  3. Step 3: Cross multiply
    12,818.12x = 19,210.98 × 6,880.28
  4. Step 4: Simplify right side
    12,818.12x = 132,176,921.47
  5. Step 5: Solve for x
    x = 132,176,921.47/12,818.12
  6. Step 6: Final answer
    x = 10,311.72

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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.