Home / 28,237.15-38,967.69-15,491.56

Finding the Fourth Proportional to 28,237.15, 38,967.69 and 15,491.56

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Solution

The fourth proportional to 28,237.15, 38,967.69 and 15,491.56 is: 21,378.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,237.15 : 38,967.69 = 15,491.56 : x
  2. Step 2: Convert to fraction form
    28,237.15/38,967.69 = 15,491.56/x
  3. Step 3: Cross multiply
    28,237.15x = 38,967.69 × 15,491.56
  4. Step 4: Simplify right side
    28,237.15x = 603,670,307.70
  5. Step 5: Solve for x
    x = 603,670,307.70/28,237.15
  6. Step 6: Final answer
    x = 21,378.58

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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.