Home / 21,167.57-29,197.95-13,623.68

Finding the Fourth Proportional to 21,167.57, 29,197.95 and 13,623.68

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Solution

The fourth proportional to 21,167.57, 29,197.95 and 13,623.68 is: 18,792.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.57 : 29,197.95 = 13,623.68 : x
  2. Step 2: Convert to fraction form
    21,167.57/29,197.95 = 13,623.68/x
  3. Step 3: Cross multiply
    21,167.57x = 29,197.95 × 13,623.68
  4. Step 4: Simplify right side
    21,167.57x = 397,783,527.46
  5. Step 5: Solve for x
    x = 397,783,527.46/21,167.57
  6. Step 6: Final answer
    x = 18,792.12

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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.