Home / 17,405.78-26,122.53-6,315.65

Finding the Fourth Proportional to 17,405.78, 26,122.53 and 6,315.65

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Solution

The fourth proportional to 17,405.78, 26,122.53 and 6,315.65 is: 9,478.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,405.78 : 26,122.53 = 6,315.65 : x
  2. Step 2: Convert to fraction form
    17,405.78/26,122.53 = 6,315.65/x
  3. Step 3: Cross multiply
    17,405.78x = 26,122.53 × 6,315.65
  4. Step 4: Simplify right side
    17,405.78x = 164,980,756.59
  5. Step 5: Solve for x
    x = 164,980,756.59/17,405.78
  6. Step 6: Final answer
    x = 9,478.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.