Home / 18,929.07-26,121.74-10,971.09

Finding the Fourth Proportional to 18,929.07, 26,121.74 and 10,971.09

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Solution

The fourth proportional to 18,929.07, 26,121.74 and 10,971.09 is: 15,139.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.07 : 26,121.74 = 10,971.09 : x
  2. Step 2: Convert to fraction form
    18,929.07/26,121.74 = 10,971.09/x
  3. Step 3: Cross multiply
    18,929.07x = 26,121.74 × 10,971.09
  4. Step 4: Simplify right side
    18,929.07x = 286,583,905.64
  5. Step 5: Solve for x
    x = 286,583,905.64/18,929.07
  6. Step 6: Final answer
    x = 15,139.88

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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.