Home / 15,376.74-21,220.69-9,406.54

Finding the Fourth Proportional to 15,376.74, 21,220.69 and 9,406.54

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Solution

The fourth proportional to 15,376.74, 21,220.69 and 9,406.54 is: 12,981.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,376.74 : 21,220.69 = 9,406.54 : x
  2. Step 2: Convert to fraction form
    15,376.74/21,220.69 = 9,406.54/x
  3. Step 3: Cross multiply
    15,376.74x = 21,220.69 × 9,406.54
  4. Step 4: Simplify right side
    15,376.74x = 199,613,269.31
  5. Step 5: Solve for x
    x = 199,613,269.31/15,376.74
  6. Step 6: Final answer
    x = 12,981.51

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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.