Home / 18,336.20-25,315.61-12,603.06

Finding the Fourth Proportional to 18,336.20, 25,315.61 and 12,603.06

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Solution

The fourth proportional to 18,336.20, 25,315.61 and 12,603.06 is: 17,400.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,336.20 : 25,315.61 = 12,603.06 : x
  2. Step 2: Convert to fraction form
    18,336.20/25,315.61 = 12,603.06/x
  3. Step 3: Cross multiply
    18,336.20x = 25,315.61 × 12,603.06
  4. Step 4: Simplify right side
    18,336.20x = 319,054,088.75
  5. Step 5: Solve for x
    x = 319,054,088.75/18,336.20
  6. Step 6: Final answer
    x = 17,400.23

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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.