Home / 13,406.61-18,502.25-7,438.84

Finding the Fourth Proportional to 13,406.61, 18,502.25 and 7,438.84

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Solution

The fourth proportional to 13,406.61, 18,502.25 and 7,438.84 is: 10,266.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.61 : 18,502.25 = 7,438.84 : x
  2. Step 2: Convert to fraction form
    13,406.61/18,502.25 = 7,438.84/x
  3. Step 3: Cross multiply
    13,406.61x = 18,502.25 × 7,438.84
  4. Step 4: Simplify right side
    13,406.61x = 137,635,214.86
  5. Step 5: Solve for x
    x = 137,635,214.86/13,406.61
  6. Step 6: Final answer
    x = 10,266.22

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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.