Home / 28,927.80-43,391.70-18,430.20

Finding the Fourth Proportional to 28,927.80, 43,391.70 and 18,430.20

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Solution

The fourth proportional to 28,927.80, 43,391.70 and 18,430.20 is: 27,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,927.80 : 43,391.70 = 18,430.20 : x
  2. Step 2: Convert to fraction form
    28,927.80/43,391.70 = 18,430.20/x
  3. Step 3: Cross multiply
    28,927.80x = 43,391.70 × 18,430.20
  4. Step 4: Simplify right side
    28,927.80x = 799,717,709.34
  5. Step 5: Solve for x
    x = 799,717,709.34/28,927.80
  6. Step 6: Final answer
    x = 27,645.30

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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.