Home / 13,755.86-20,615.31-7,506.51

Finding the Fourth Proportional to 13,755.86, 20,615.31 and 7,506.51

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Solution

The fourth proportional to 13,755.86, 20,615.31 and 7,506.51 is: 11,249.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.86 : 20,615.31 = 7,506.51 : x
  2. Step 2: Convert to fraction form
    13,755.86/20,615.31 = 7,506.51/x
  3. Step 3: Cross multiply
    13,755.86x = 20,615.31 × 7,506.51
  4. Step 4: Simplify right side
    13,755.86x = 154,748,953.36
  5. Step 5: Solve for x
    x = 154,748,953.36/13,755.86
  6. Step 6: Final answer
    x = 11,249.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.