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Finding the Fourth Proportional to 18,165.30, 25,373.10 and 18,165.30

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Solution

The fourth proportional to 18,165.30, 25,373.10 and 18,165.30 is: 25,373.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,165.30 : 25,373.10 = 18,165.30 : x
  2. Step 2: Convert to fraction form
    18,165.30/25,373.10 = 18,165.30/x
  3. Step 3: Cross multiply
    18,165.30x = 25,373.10 × 18,165.30
  4. Step 4: Simplify right side
    18,165.30x = 460,909,973.43
  5. Step 5: Solve for x
    x = 460,909,973.43/18,165.30
  6. Step 6: Final answer
    x = 25,373.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.