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Finding the Fourth Proportional to 15,434.58, 21,299.58 and 8,360.58

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Solution

The fourth proportional to 15,434.58, 21,299.58 and 8,360.58 is: 11,537.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,434.58 : 21,299.58 = 8,360.58 : x
  2. Step 2: Convert to fraction form
    15,434.58/21,299.58 = 8,360.58/x
  3. Step 3: Cross multiply
    15,434.58x = 21,299.58 × 8,360.58
  4. Step 4: Simplify right side
    15,434.58x = 178,076,842.56
  5. Step 5: Solve for x
    x = 178,076,842.56/15,434.58
  6. Step 6: Final answer
    x = 11,537.52

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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.