Home / 55,740.90-83,611.03-13,621.20

Finding the Fourth Proportional to 55,740.90, 83,611.03 and 13,621.20

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Solution

The fourth proportional to 55,740.90, 83,611.03 and 13,621.20 is: 20,431.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,740.90 : 83,611.03 = 13,621.20 : x
  2. Step 2: Convert to fraction form
    55,740.90/83,611.03 = 13,621.20/x
  3. Step 3: Cross multiply
    55,740.90x = 83,611.03 × 13,621.20
  4. Step 4: Simplify right side
    55,740.90x = 1,138,882,561.84
  5. Step 5: Solve for x
    x = 1,138,882,561.84/55,740.90
  6. Step 6: Final answer
    x = 20,431.72

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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.