Home / 15,374.74-21,217.93-9,404.54

Finding the Fourth Proportional to 15,374.74, 21,217.93 and 9,404.54

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Solution

The fourth proportional to 15,374.74, 21,217.93 and 9,404.54 is: 12,978.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,374.74 : 21,217.93 = 9,404.54 : x
  2. Step 2: Convert to fraction form
    15,374.74/21,217.93 = 9,404.54/x
  3. Step 3: Cross multiply
    15,374.74x = 21,217.93 × 9,404.54
  4. Step 4: Simplify right side
    15,374.74x = 199,544,871.40
  5. Step 5: Solve for x
    x = 199,544,871.40/15,374.74
  6. Step 6: Final answer
    x = 12,978.75

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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.