Home / 21,617.51-29,835.05-12,668.56

Finding the Fourth Proportional to 21,617.51, 29,835.05 and 12,668.56

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Solution

The fourth proportional to 21,617.51, 29,835.05 and 12,668.56 is: 17,484.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,617.51 : 29,835.05 = 12,668.56 : x
  2. Step 2: Convert to fraction form
    21,617.51/29,835.05 = 12,668.56/x
  3. Step 3: Cross multiply
    21,617.51x = 29,835.05 × 12,668.56
  4. Step 4: Simplify right side
    21,617.51x = 377,966,983.10
  5. Step 5: Solve for x
    x = 377,966,983.10/21,617.51
  6. Step 6: Final answer
    x = 17,484.30

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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.