Home / 18,603.16-25,679.10-12,317.56

Finding the Fourth Proportional to 18,603.16, 25,679.10 and 12,317.56

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Solution

The fourth proportional to 18,603.16, 25,679.10 and 12,317.56 is: 17,002.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.16 : 25,679.10 = 12,317.56 : x
  2. Step 2: Convert to fraction form
    18,603.16/25,679.10 = 12,317.56/x
  3. Step 3: Cross multiply
    18,603.16x = 25,679.10 × 12,317.56
  4. Step 4: Simplify right side
    18,603.16x = 316,303,855.00
  5. Step 5: Solve for x
    x = 316,303,855.00/18,603.16
  6. Step 6: Final answer
    x = 17,002.69

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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.