Home / 28,378.47-42,573.29-11,729.55

Finding the Fourth Proportional to 28,378.47, 42,573.29 and 11,729.55

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Solution

The fourth proportional to 28,378.47, 42,573.29 and 11,729.55 is: 17,596.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,378.47 : 42,573.29 = 11,729.55 : x
  2. Step 2: Convert to fraction form
    28,378.47/42,573.29 = 11,729.55/x
  3. Step 3: Cross multiply
    28,378.47x = 42,573.29 × 11,729.55
  4. Step 4: Simplify right side
    28,378.47x = 499,365,475.07
  5. Step 5: Solve for x
    x = 499,365,475.07/28,378.47
  6. Step 6: Final answer
    x = 17,596.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.