Home / 13,615.68-20,381.08-10,487.60

Finding the Fourth Proportional to 13,615.68, 20,381.08 and 10,487.60

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Solution

The fourth proportional to 13,615.68, 20,381.08 and 10,487.60 is: 15,698.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.68 : 20,381.08 = 10,487.60 : x
  2. Step 2: Convert to fraction form
    13,615.68/20,381.08 = 10,487.60/x
  3. Step 3: Cross multiply
    13,615.68x = 20,381.08 × 10,487.60
  4. Step 4: Simplify right side
    13,615.68x = 213,748,614.61
  5. Step 5: Solve for x
    x = 213,748,614.61/13,615.68
  6. Step 6: Final answer
    x = 15,698.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.