Home / 21,570.54-29,768.68-13,073.40

Finding the Fourth Proportional to 21,570.54, 29,768.68 and 13,073.40

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Solution

The fourth proportional to 21,570.54, 29,768.68 and 13,073.40 is: 18,042.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,570.54 : 29,768.68 = 13,073.40 : x
  2. Step 2: Convert to fraction form
    21,570.54/29,768.68 = 13,073.40/x
  3. Step 3: Cross multiply
    21,570.54x = 29,768.68 × 13,073.40
  4. Step 4: Simplify right side
    21,570.54x = 389,177,861.11
  5. Step 5: Solve for x
    x = 389,177,861.11/21,570.54
  6. Step 6: Final answer
    x = 18,042.10

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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.