Home / 28,915.84-43,378.56-10,190.56

Finding the Fourth Proportional to 28,915.84, 43,378.56 and 10,190.56

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Solution

The fourth proportional to 28,915.84, 43,378.56 and 10,190.56 is: 15,287.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.84 : 43,378.56 = 10,190.56 : x
  2. Step 2: Convert to fraction form
    28,915.84/43,378.56 = 10,190.56/x
  3. Step 3: Cross multiply
    28,915.84x = 43,378.56 × 10,190.56
  4. Step 4: Simplify right side
    28,915.84x = 442,051,818.39
  5. Step 5: Solve for x
    x = 442,051,818.39/28,915.84
  6. Step 6: Final answer
    x = 15,287.53

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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.