Home / 15,453.58-21,325.80-8,739.18

Finding the Fourth Proportional to 15,453.58, 21,325.80 and 8,739.18

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Solution

The fourth proportional to 15,453.58, 21,325.80 and 8,739.18 is: 12,059.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.58 : 21,325.80 = 8,739.18 : x
  2. Step 2: Convert to fraction form
    15,453.58/21,325.80 = 8,739.18/x
  3. Step 3: Cross multiply
    15,453.58x = 21,325.80 × 8,739.18
  4. Step 4: Simplify right side
    15,453.58x = 186,370,004.84
  5. Step 5: Solve for x
    x = 186,370,004.84/15,453.58
  6. Step 6: Final answer
    x = 12,059.99

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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.