Home / 19,316.48-28,954.73-10,978.54

Finding the Fourth Proportional to 19,316.48, 28,954.73 and 10,978.54

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Solution

The fourth proportional to 19,316.48, 28,954.73 and 10,978.54 is: 16,456.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,316.48 : 28,954.73 = 10,978.54 : x
  2. Step 2: Convert to fraction form
    19,316.48/28,954.73 = 10,978.54/x
  3. Step 3: Cross multiply
    19,316.48x = 28,954.73 × 10,978.54
  4. Step 4: Simplify right side
    19,316.48x = 317,880,616.55
  5. Step 5: Solve for x
    x = 317,880,616.55/19,316.48
  6. Step 6: Final answer
    x = 16,456.45

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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.