Home / 15,668.84-21,626.26-14,407.90

Finding the Fourth Proportional to 15,668.84, 21,626.26 and 14,407.90

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Solution

The fourth proportional to 15,668.84, 21,626.26 and 14,407.90 is: 19,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,668.84 : 21,626.26 = 14,407.90 : x
  2. Step 2: Convert to fraction form
    15,668.84/21,626.26 = 14,407.90/x
  3. Step 3: Cross multiply
    15,668.84x = 21,626.26 × 14,407.90
  4. Step 4: Simplify right side
    15,668.84x = 311,588,991.45
  5. Step 5: Solve for x
    x = 311,588,991.45/15,668.84
  6. Step 6: Final answer
    x = 19,885.90

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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.