Home / 18,983.01-28,485.45-7,890.06

Finding the Fourth Proportional to 18,983.01, 28,485.45 and 7,890.06

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Solution

The fourth proportional to 18,983.01, 28,485.45 and 7,890.06 is: 11,839.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,983.01 : 28,485.45 = 7,890.06 : x
  2. Step 2: Convert to fraction form
    18,983.01/28,485.45 = 7,890.06/x
  3. Step 3: Cross multiply
    18,983.01x = 28,485.45 × 7,890.06
  4. Step 4: Simplify right side
    18,983.01x = 224,751,909.63
  5. Step 5: Solve for x
    x = 224,751,909.63/18,983.01
  6. Step 6: Final answer
    x = 11,839.64

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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.