Home / 18,929.08-26,121.78-10,431.99

Finding the Fourth Proportional to 18,929.08, 26,121.78 and 10,431.99

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Solution

The fourth proportional to 18,929.08, 26,121.78 and 10,431.99 is: 14,395.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.08 : 26,121.78 = 10,431.99 : x
  2. Step 2: Convert to fraction form
    18,929.08/26,121.78 = 10,431.99/x
  3. Step 3: Cross multiply
    18,929.08x = 26,121.78 × 10,431.99
  4. Step 4: Simplify right side
    18,929.08x = 272,502,147.74
  5. Step 5: Solve for x
    x = 272,502,147.74/18,929.08
  6. Step 6: Final answer
    x = 14,395.95

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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.