Home / 27,378.60-37,782.45-15,441.72

Finding the Fourth Proportional to 27,378.60, 37,782.45 and 15,441.72

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Solution

The fourth proportional to 27,378.60, 37,782.45 and 15,441.72 is: 21,309.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,378.60 : 37,782.45 = 15,441.72 : x
  2. Step 2: Convert to fraction form
    27,378.60/37,782.45 = 15,441.72/x
  3. Step 3: Cross multiply
    27,378.60x = 37,782.45 × 15,441.72
  4. Step 4: Simplify right side
    27,378.60x = 583,426,013.81
  5. Step 5: Solve for x
    x = 583,426,013.81/27,378.60
  6. Step 6: Final answer
    x = 21,309.56

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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.