Home / 15,444.32-21,313.12-8,370.88

Finding the Fourth Proportional to 15,444.32, 21,313.12 and 8,370.88

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Solution

The fourth proportional to 15,444.32, 21,313.12 and 8,370.88 is: 11,551.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,444.32 : 21,313.12 = 8,370.88 : x
  2. Step 2: Convert to fraction form
    15,444.32/21,313.12 = 8,370.88/x
  3. Step 3: Cross multiply
    15,444.32x = 21,313.12 × 8,370.88
  4. Step 4: Simplify right side
    15,444.32x = 178,409,569.95
  5. Step 5: Solve for x
    x = 178,409,569.95/15,444.32
  6. Step 6: Final answer
    x = 11,551.79

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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.