Home / 18,612.48-27,812.46-14,145.60

Finding the Fourth Proportional to 18,612.48, 27,812.46 and 14,145.60

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Solution

The fourth proportional to 18,612.48, 27,812.46 and 14,145.60 is: 21,137.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,612.48 : 27,812.46 = 14,145.60 : x
  2. Step 2: Convert to fraction form
    18,612.48/27,812.46 = 14,145.60/x
  3. Step 3: Cross multiply
    18,612.48x = 27,812.46 × 14,145.60
  4. Step 4: Simplify right side
    18,612.48x = 393,423,934.18
  5. Step 5: Solve for x
    x = 393,423,934.18/18,612.48
  6. Step 6: Final answer
    x = 21,137.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.