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Finding the Fourth Proportional to 22,457.01, 30,989.07 and 13,971.45

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Solution

The fourth proportional to 22,457.01, 30,989.07 and 13,971.45 is: 19,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,457.01 : 30,989.07 = 13,971.45 : x
  2. Step 2: Convert to fraction form
    22,457.01/30,989.07 = 13,971.45/x
  3. Step 3: Cross multiply
    22,457.01x = 30,989.07 × 13,971.45
  4. Step 4: Simplify right side
    22,457.01x = 432,962,242.05
  5. Step 5: Solve for x
    x = 432,962,242.05/22,457.01
  6. Step 6: Final answer
    x = 19,279.60

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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.