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Finding the Fourth Proportional to 15,466.60, 21,343.80 and 8,393.08

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Solution

The fourth proportional to 15,466.60, 21,343.80 and 8,393.08 is: 11,582.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,466.60 : 21,343.80 = 8,393.08 : x
  2. Step 2: Convert to fraction form
    15,466.60/21,343.80 = 8,393.08/x
  3. Step 3: Cross multiply
    15,466.60x = 21,343.80 × 8,393.08
  4. Step 4: Simplify right side
    15,466.60x = 179,140,220.90
  5. Step 5: Solve for x
    x = 179,140,220.90/15,466.60
  6. Step 6: Final answer
    x = 11,582.39

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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.