Home / 18,929.40-26,127-10,976.04

Finding the Fourth Proportional to 18,929.40, 26,127 and 10,976.04

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Solution

The fourth proportional to 18,929.40, 26,127 and 10,976.04 is: 15,149.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.40 : 26,127 = 10,976.04 : x
  2. Step 2: Convert to fraction form
    18,929.40/26,127 = 10,976.04/x
  3. Step 3: Cross multiply
    18,929.40x = 26,127 × 10,976.04
  4. Step 4: Simplify right side
    18,929.40x = 286,770,997.08
  5. Step 5: Solve for x
    x = 286,770,997.08/18,929.40
  6. Step 6: Final answer
    x = 15,149.50

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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.