Home / 18,122.90-25,009.63-10,165.10

Finding the Fourth Proportional to 18,122.90, 25,009.63 and 10,165.10

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Solution

The fourth proportional to 18,122.90, 25,009.63 and 10,165.10 is: 14,027.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.90 : 25,009.63 = 10,165.10 : x
  2. Step 2: Convert to fraction form
    18,122.90/25,009.63 = 10,165.10/x
  3. Step 3: Cross multiply
    18,122.90x = 25,009.63 × 10,165.10
  4. Step 4: Simplify right side
    18,122.90x = 254,225,239.45
  5. Step 5: Solve for x
    x = 254,225,239.45/18,122.90
  6. Step 6: Final answer
    x = 14,027.85

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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.