Home / 26,288.96-39,430.88-7,821.12

Finding the Fourth Proportional to 26,288.96, 39,430.88 and 7,821.12

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Solution

The fourth proportional to 26,288.96, 39,430.88 and 7,821.12 is: 11,730.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,288.96 : 39,430.88 = 7,821.12 : x
  2. Step 2: Convert to fraction form
    26,288.96/39,430.88 = 7,821.12/x
  3. Step 3: Cross multiply
    26,288.96x = 39,430.88 × 7,821.12
  4. Step 4: Simplify right side
    26,288.96x = 308,393,644.19
  5. Step 5: Solve for x
    x = 308,393,644.19/26,288.96
  6. Step 6: Final answer
    x = 11,730.92

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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.