Home / 13,558.47-18,709.79-7,508.51

Finding the Fourth Proportional to 13,558.47, 18,709.79 and 7,508.51

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Solution

The fourth proportional to 13,558.47, 18,709.79 and 7,508.51 is: 10,361.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.47 : 18,709.79 = 7,508.51 : x
  2. Step 2: Convert to fraction form
    13,558.47/18,709.79 = 7,508.51/x
  3. Step 3: Cross multiply
    13,558.47x = 18,709.79 × 7,508.51
  4. Step 4: Simplify right side
    13,558.47x = 140,482,514.22
  5. Step 5: Solve for x
    x = 140,482,514.22/13,558.47
  6. Step 6: Final answer
    x = 10,361.24

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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.