Home / 13,707.88-18,916.76-7,739.35

Finding the Fourth Proportional to 13,707.88, 18,916.76 and 7,739.35

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Solution

The fourth proportional to 13,707.88, 18,916.76 and 7,739.35 is: 10,680.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.88 : 18,916.76 = 7,739.35 : x
  2. Step 2: Convert to fraction form
    13,707.88/18,916.76 = 7,739.35/x
  3. Step 3: Cross multiply
    13,707.88x = 18,916.76 × 7,739.35
  4. Step 4: Simplify right side
    13,707.88x = 146,403,398.56
  5. Step 5: Solve for x
    x = 146,403,398.56/13,707.88
  6. Step 6: Final answer
    x = 10,680.24

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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.