Home / 14,280.78-19,702.70-8,311.18

Finding the Fourth Proportional to 14,280.78, 19,702.70 and 8,311.18

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Solution

The fourth proportional to 14,280.78, 19,702.70 and 8,311.18 is: 11,466.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.78 : 19,702.70 = 8,311.18 : x
  2. Step 2: Convert to fraction form
    14,280.78/19,702.70 = 8,311.18/x
  3. Step 3: Cross multiply
    14,280.78x = 19,702.70 × 8,311.18
  4. Step 4: Simplify right side
    14,280.78x = 163,752,636.93
  5. Step 5: Solve for x
    x = 163,752,636.93/14,280.78
  6. Step 6: Final answer
    x = 11,466.65

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Double scale
Find fourth proportional to 14,281.78, 19,704.08 and 8,312.18
Similar ratio
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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.