Home / 14,139.71-19,514.34-8,090.51

Finding the Fourth Proportional to 14,139.71, 19,514.34 and 8,090.51

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Solution

The fourth proportional to 14,139.71, 19,514.34 and 8,090.51 is: 11,165.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.71 : 19,514.34 = 8,090.51 : x
  2. Step 2: Convert to fraction form
    14,139.71/19,514.34 = 8,090.51/x
  3. Step 3: Cross multiply
    14,139.71x = 19,514.34 × 8,090.51
  4. Step 4: Simplify right side
    14,139.71x = 157,880,865.34
  5. Step 5: Solve for x
    x = 157,880,865.34/14,139.71
  6. Step 6: Final answer
    x = 11,165.78

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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.