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Finding the Fourth Proportional to 18,465.76, 25,474.62 and 12,495.34

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Solution

The fourth proportional to 18,465.76, 25,474.62 and 12,495.34 is: 17,238.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,465.76 : 25,474.62 = 12,495.34 : x
  2. Step 2: Convert to fraction form
    18,465.76/25,474.62 = 12,495.34/x
  3. Step 3: Cross multiply
    18,465.76x = 25,474.62 × 12,495.34
  4. Step 4: Simplify right side
    18,465.76x = 318,314,038.27
  5. Step 5: Solve for x
    x = 318,314,038.27/18,465.76
  6. Step 6: Final answer
    x = 17,238.07

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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.