Home / 18,939.60-26,109.36-13,256.82

Finding the Fourth Proportional to 18,939.60, 26,109.36 and 13,256.82

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Solution

The fourth proportional to 18,939.60, 26,109.36 and 13,256.82 is: 18,275.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.60 : 26,109.36 = 13,256.82 : x
  2. Step 2: Convert to fraction form
    18,939.60/26,109.36 = 13,256.82/x
  3. Step 3: Cross multiply
    18,939.60x = 26,109.36 × 13,256.82
  4. Step 4: Simplify right side
    18,939.60x = 346,127,085.84
  5. Step 5: Solve for x
    x = 346,127,085.84/18,939.60
  6. Step 6: Final answer
    x = 18,275.31

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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.