Home / 15,382.95-21,228.03-8,668.46

Finding the Fourth Proportional to 15,382.95, 21,228.03 and 8,668.46

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Solution

The fourth proportional to 15,382.95, 21,228.03 and 8,668.46 is: 11,962.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382.95 : 21,228.03 = 8,668.46 : x
  2. Step 2: Convert to fraction form
    15,382.95/21,228.03 = 8,668.46/x
  3. Step 3: Cross multiply
    15,382.95x = 21,228.03 × 8,668.46
  4. Step 4: Simplify right side
    15,382.95x = 184,014,222.79
  5. Step 5: Solve for x
    x = 184,014,222.79/15,382.95
  6. Step 6: Final answer
    x = 11,962.22

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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.