Home / 13,506.80-18,637.50-7,537.31

Finding the Fourth Proportional to 13,506.80, 18,637.50 and 7,537.31

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Solution

The fourth proportional to 13,506.80, 18,637.50 and 7,537.31 is: 10,400.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,506.80 : 18,637.50 = 7,537.31 : x
  2. Step 2: Convert to fraction form
    13,506.80/18,637.50 = 7,537.31/x
  3. Step 3: Cross multiply
    13,506.80x = 18,637.50 × 7,537.31
  4. Step 4: Simplify right side
    13,506.80x = 140,476,521.94
  5. Step 5: Solve for x
    x = 140,476,521.94/13,506.80
  6. Step 6: Final answer
    x = 10,400.43

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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.