Home / 14,657.78-21,990.30-4,269.50

Finding the Fourth Proportional to 14,657.78, 21,990.30 and 4,269.50

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Solution

The fourth proportional to 14,657.78, 21,990.30 and 4,269.50 is: 6,405.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,657.78 : 21,990.30 = 4,269.50 : x
  2. Step 2: Convert to fraction form
    14,657.78/21,990.30 = 4,269.50/x
  3. Step 3: Cross multiply
    14,657.78x = 21,990.30 × 4,269.50
  4. Step 4: Simplify right side
    14,657.78x = 93,887,585.85
  5. Step 5: Solve for x
    x = 93,887,585.85/14,657.78
  6. Step 6: Final answer
    x = 6,405.31

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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.