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Finding the Fourth Proportional to 55,206.45, 82,809.68 and 13,653.45

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Solution

The fourth proportional to 55,206.45, 82,809.68 and 13,653.45 is: 20,480.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,206.45 : 82,809.68 = 13,653.45 : x
  2. Step 2: Convert to fraction form
    55,206.45/82,809.68 = 13,653.45/x
  3. Step 3: Cross multiply
    55,206.45x = 82,809.68 × 13,653.45
  4. Step 4: Simplify right side
    55,206.45x = 1,130,637,757.13
  5. Step 5: Solve for x
    x = 1,130,637,757.13/55,206.45
  6. Step 6: Final answer
    x = 20,480.18

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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.