Home / 15,427.32-21,289.71-8,353.72

Finding the Fourth Proportional to 15,427.32, 21,289.71 and 8,353.72

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Solution

The fourth proportional to 15,427.32, 21,289.71 and 8,353.72 is: 11,528.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,427.32 : 21,289.71 = 8,353.72 : x
  2. Step 2: Convert to fraction form
    15,427.32/21,289.71 = 8,353.72/x
  3. Step 3: Cross multiply
    15,427.32x = 21,289.71 × 8,353.72
  4. Step 4: Simplify right side
    15,427.32x = 177,848,276.22
  5. Step 5: Solve for x
    x = 177,848,276.22/15,427.32
  6. Step 6: Final answer
    x = 11,528.14

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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.