Home / 18,939.68-26,109.40-13,256.84

Finding the Fourth Proportional to 18,939.68, 26,109.40 and 13,256.84

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Solution

The fourth proportional to 18,939.68, 26,109.40 and 13,256.84 is: 18,275.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.68 : 26,109.40 = 13,256.84 : x
  2. Step 2: Convert to fraction form
    18,939.68/26,109.40 = 13,256.84/x
  3. Step 3: Cross multiply
    18,939.68x = 26,109.40 × 13,256.84
  4. Step 4: Simplify right side
    18,939.68x = 346,128,138.30
  5. Step 5: Solve for x
    x = 346,128,138.30/18,939.68
  6. Step 6: Final answer
    x = 18,275.29

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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.