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Finding the Fourth Proportional to 15,106.48, 20,848.26 and 8,820.88

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Solution

The fourth proportional to 15,106.48, 20,848.26 and 8,820.88 is: 12,173.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,106.48 : 20,848.26 = 8,820.88 : x
  2. Step 2: Convert to fraction form
    15,106.48/20,848.26 = 8,820.88/x
  3. Step 3: Cross multiply
    15,106.48x = 20,848.26 × 8,820.88
  4. Step 4: Simplify right side
    15,106.48x = 183,899,999.67
  5. Step 5: Solve for x
    x = 183,899,999.67/15,106.48
  6. Step 6: Final answer
    x = 12,173.58

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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.