Home / 15,668.48-21,603.84-14,346.56

Finding the Fourth Proportional to 15,668.48, 21,603.84 and 14,346.56

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Solution

The fourth proportional to 15,668.48, 21,603.84 and 14,346.56 is: 19,781.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,668.48 : 21,603.84 = 14,346.56 : x
  2. Step 2: Convert to fraction form
    15,668.48/21,603.84 = 14,346.56/x
  3. Step 3: Cross multiply
    15,668.48x = 21,603.84 × 14,346.56
  4. Step 4: Simplify right side
    15,668.48x = 309,940,786.79
  5. Step 5: Solve for x
    x = 309,940,786.79/15,668.48
  6. Step 6: Final answer
    x = 19,781.16

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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.