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Finding the Fourth Proportional to 15,826.36, 21,840.48 and 8,752.88

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Solution

The fourth proportional to 15,826.36, 21,840.48 and 8,752.88 is: 12,079.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,826.36 : 21,840.48 = 8,752.88 : x
  2. Step 2: Convert to fraction form
    15,826.36/21,840.48 = 8,752.88/x
  3. Step 3: Cross multiply
    15,826.36x = 21,840.48 × 8,752.88
  4. Step 4: Simplify right side
    15,826.36x = 191,167,100.58
  5. Step 5: Solve for x
    x = 191,167,100.58/15,826.36
  6. Step 6: Final answer
    x = 12,079.03

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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.