Home / 15,444.28-21,313-8,370.72

Finding the Fourth Proportional to 15,444.28, 21,313 and 8,370.72

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Solution

The fourth proportional to 15,444.28, 21,313 and 8,370.72 is: 11,551.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,444.28 : 21,313 = 8,370.72 : x
  2. Step 2: Convert to fraction form
    15,444.28/21,313 = 8,370.72/x
  3. Step 3: Cross multiply
    15,444.28x = 21,313 × 8,370.72
  4. Step 4: Simplify right side
    15,444.28x = 178,405,155.36
  5. Step 5: Solve for x
    x = 178,405,155.36/15,444.28
  6. Step 6: Final answer
    x = 11,551.54

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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.