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Finding the Fourth Proportional to 14,657.60, 22,012.80 and 12,843.20

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Solution

The fourth proportional to 14,657.60, 22,012.80 and 12,843.20 is: 19,287.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,657.60 : 22,012.80 = 12,843.20 : x
  2. Step 2: Convert to fraction form
    14,657.60/22,012.80 = 12,843.20/x
  3. Step 3: Cross multiply
    14,657.60x = 22,012.80 × 12,843.20
  4. Step 4: Simplify right side
    14,657.60x = 282,714,792.96
  5. Step 5: Solve for x
    x = 282,714,792.96/14,657.60
  6. Step 6: Final answer
    x = 19,287.93

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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.