Home / 13,421.30-18,527.68-8,392.90

Finding the Fourth Proportional to 13,421.30, 18,527.68 and 8,392.90

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Solution

The fourth proportional to 13,421.30, 18,527.68 and 8,392.90 is: 11,586.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.30 : 18,527.68 = 8,392.90 : x
  2. Step 2: Convert to fraction form
    13,421.30/18,527.68 = 8,392.90/x
  3. Step 3: Cross multiply
    13,421.30x = 18,527.68 × 8,392.90
  4. Step 4: Simplify right side
    13,421.30x = 155,500,965.47
  5. Step 5: Solve for x
    x = 155,500,965.47/13,421.30
  6. Step 6: Final answer
    x = 11,586.13

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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.