Home / 15,256.50-21,051.75-8,540.89

Finding the Fourth Proportional to 15,256.50, 21,051.75 and 8,540.89

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Solution

The fourth proportional to 15,256.50, 21,051.75 and 8,540.89 is: 11,785.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,256.50 : 21,051.75 = 8,540.89 : x
  2. Step 2: Convert to fraction form
    15,256.50/21,051.75 = 8,540.89/x
  3. Step 3: Cross multiply
    15,256.50x = 21,051.75 × 8,540.89
  4. Step 4: Simplify right side
    15,256.50x = 179,800,681.06
  5. Step 5: Solve for x
    x = 179,800,681.06/15,256.50
  6. Step 6: Final answer
    x = 11,785.19

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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.