Home / 21,957.13-30,301.58-13,457.62

Finding the Fourth Proportional to 21,957.13, 30,301.58 and 13,457.62

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Solution

The fourth proportional to 21,957.13, 30,301.58 and 13,457.62 is: 18,571.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.13 : 30,301.58 = 13,457.62 : x
  2. Step 2: Convert to fraction form
    21,957.13/30,301.58 = 13,457.62/x
  3. Step 3: Cross multiply
    21,957.13x = 30,301.58 × 13,457.62
  4. Step 4: Simplify right side
    21,957.13x = 407,787,149.04
  5. Step 5: Solve for x
    x = 407,787,149.04/21,957.13
  6. Step 6: Final answer
    x = 18,571.97

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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.