Home / 15,323.09-21,143.16-8,609.00

Finding the Fourth Proportional to 15,323.09, 21,143.16 and 8,609.00

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Solution

The fourth proportional to 15,323.09, 21,143.16 and 8,609.00 is: 11,878.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,323.09 : 21,143.16 = 8,609.00 : x
  2. Step 2: Convert to fraction form
    15,323.09/21,143.16 = 8,609.00/x
  3. Step 3: Cross multiply
    15,323.09x = 21,143.16 × 8,609.00
  4. Step 4: Simplify right side
    15,323.09x = 182,021,358.72
  5. Step 5: Solve for x
    x = 182,021,358.72/15,323.09
  6. Step 6: Final answer
    x = 11,878.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.