Home / 27,378.88-37,780.58-15,445.15

Finding the Fourth Proportional to 27,378.88, 37,780.58 and 15,445.15

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Solution

The fourth proportional to 27,378.88, 37,780.58 and 15,445.15 is: 21,313.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,378.88 : 37,780.58 = 15,445.15 : x
  2. Step 2: Convert to fraction form
    27,378.88/37,780.58 = 15,445.15/x
  3. Step 3: Cross multiply
    27,378.88x = 37,780.58 × 15,445.15
  4. Step 4: Simplify right side
    27,378.88x = 583,526,725.19
  5. Step 5: Solve for x
    x = 583,526,725.19/27,378.88
  6. Step 6: Final answer
    x = 21,313.02

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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.