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Finding the Fourth Proportional to 25,972.88, 38,969.03 and 13,485.11

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Solution

The fourth proportional to 25,972.88, 38,969.03 and 13,485.11 is: 20,232.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,972.88 : 38,969.03 = 13,485.11 : x
  2. Step 2: Convert to fraction form
    25,972.88/38,969.03 = 13,485.11/x
  3. Step 3: Cross multiply
    25,972.88x = 38,969.03 × 13,485.11
  4. Step 4: Simplify right side
    25,972.88x = 525,501,495.01
  5. Step 5: Solve for x
    x = 525,501,495.01/25,972.88
  6. Step 6: Final answer
    x = 20,232.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.