Home / 28,237.55-38,968.89-15,491.25

Finding the Fourth Proportional to 28,237.55, 38,968.89 and 15,491.25

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Solution

The fourth proportional to 28,237.55, 38,968.89 and 15,491.25 is: 21,378.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,237.55 : 38,968.89 = 15,491.25 : x
  2. Step 2: Convert to fraction form
    28,237.55/38,968.89 = 15,491.25/x
  3. Step 3: Cross multiply
    28,237.55x = 38,968.89 × 15,491.25
  4. Step 4: Simplify right side
    28,237.55x = 603,676,817.21
  5. Step 5: Solve for x
    x = 603,676,817.21/28,237.55
  6. Step 6: Final answer
    x = 21,378.52

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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.