Home / 13,614.48-20,421.72-11,903.76

Finding the Fourth Proportional to 13,614.48, 20,421.72 and 11,903.76

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Solution

The fourth proportional to 13,614.48, 20,421.72 and 11,903.76 is: 17,855.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,614.48 : 20,421.72 = 11,903.76 : x
  2. Step 2: Convert to fraction form
    13,614.48/20,421.72 = 11,903.76/x
  3. Step 3: Cross multiply
    13,614.48x = 20,421.72 × 11,903.76
  4. Step 4: Simplify right side
    13,614.48x = 243,095,253.67
  5. Step 5: Solve for x
    x = 243,095,253.67/13,614.48
  6. Step 6: Final answer
    x = 17,855.64

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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.