Home / 15,742.23-21,724.14-8,668.50

Finding the Fourth Proportional to 15,742.23, 21,724.14 and 8,668.50

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Solution

The fourth proportional to 15,742.23, 21,724.14 and 8,668.50 is: 11,962.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.23 : 21,724.14 = 8,668.50 : x
  2. Step 2: Convert to fraction form
    15,742.23/21,724.14 = 8,668.50/x
  3. Step 3: Cross multiply
    15,742.23x = 21,724.14 × 8,668.50
  4. Step 4: Simplify right side
    15,742.23x = 188,315,707.59
  5. Step 5: Solve for x
    x = 188,315,707.59/15,742.23
  6. Step 6: Final answer
    x = 11,962.45

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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.