Home / 13,407.32-18,501.87-7,438.89

Finding the Fourth Proportional to 13,407.32, 18,501.87 and 7,438.89

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Solution

The fourth proportional to 13,407.32, 18,501.87 and 7,438.89 is: 10,265.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.32 : 18,501.87 = 7,438.89 : x
  2. Step 2: Convert to fraction form
    13,407.32/18,501.87 = 7,438.89/x
  3. Step 3: Cross multiply
    13,407.32x = 18,501.87 × 7,438.89
  4. Step 4: Simplify right side
    13,407.32x = 137,633,327.09
  5. Step 5: Solve for x
    x = 137,633,327.09/13,407.32
  6. Step 6: Final answer
    x = 10,265.53

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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.