Home / 18,962.58-28,448.43-7,275.80

Finding the Fourth Proportional to 18,962.58, 28,448.43 and 7,275.80

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Solution

The fourth proportional to 18,962.58, 28,448.43 and 7,275.80 is: 10,915.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.58 : 28,448.43 = 7,275.80 : x
  2. Step 2: Convert to fraction form
    18,962.58/28,448.43 = 7,275.80/x
  3. Step 3: Cross multiply
    18,962.58x = 28,448.43 × 7,275.80
  4. Step 4: Simplify right side
    18,962.58x = 206,984,970.81
  5. Step 5: Solve for x
    x = 206,984,970.81/18,962.58
  6. Step 6: Final answer
    x = 10,915.44

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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.