Home / 21,285.03-31,894.43-8,130.23

Finding the Fourth Proportional to 21,285.03, 31,894.43 and 8,130.23

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Solution

The fourth proportional to 21,285.03, 31,894.43 and 8,130.23 is: 12,182.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.03 : 31,894.43 = 8,130.23 : x
  2. Step 2: Convert to fraction form
    21,285.03/31,894.43 = 8,130.23/x
  3. Step 3: Cross multiply
    21,285.03x = 31,894.43 × 8,130.23
  4. Step 4: Simplify right side
    21,285.03x = 259,308,851.50
  5. Step 5: Solve for x
    x = 259,308,851.50/21,285.03
  6. Step 6: Final answer
    x = 12,182.69

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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.