Home / 18,339.91-25,320.83-12,606.90

Finding the Fourth Proportional to 18,339.91, 25,320.83 and 12,606.90

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Solution

The fourth proportional to 18,339.91, 25,320.83 and 12,606.90 is: 17,405.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.91 : 25,320.83 = 12,606.90 : x
  2. Step 2: Convert to fraction form
    18,339.91/25,320.83 = 12,606.90/x
  3. Step 3: Cross multiply
    18,339.91x = 25,320.83 × 12,606.90
  4. Step 4: Simplify right side
    18,339.91x = 319,217,108.29
  5. Step 5: Solve for x
    x = 319,217,108.29/18,339.91
  6. Step 6: Final answer
    x = 17,405.60

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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.