Home / 15,429.26-21,291.98-8,715.58

Finding the Fourth Proportional to 15,429.26, 21,291.98 and 8,715.58

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Solution

The fourth proportional to 15,429.26, 21,291.98 and 8,715.58 is: 12,027.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,429.26 : 21,291.98 = 8,715.58 : x
  2. Step 2: Convert to fraction form
    15,429.26/21,291.98 = 8,715.58/x
  3. Step 3: Cross multiply
    15,429.26x = 21,291.98 × 8,715.58
  4. Step 4: Simplify right side
    15,429.26x = 185,571,955.05
  5. Step 5: Solve for x
    x = 185,571,955.05/15,429.26
  6. Step 6: Final answer
    x = 12,027.28

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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.