Home / 13,603.20-20,421-9,926.88

Finding the Fourth Proportional to 13,603.20, 20,421 and 9,926.88

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Solution

The fourth proportional to 13,603.20, 20,421 and 9,926.88 is: 14,902.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.20 : 20,421 = 9,926.88 : x
  2. Step 2: Convert to fraction form
    13,603.20/20,421 = 9,926.88/x
  3. Step 3: Cross multiply
    13,603.20x = 20,421 × 9,926.88
  4. Step 4: Simplify right side
    13,603.20x = 202,716,816.48
  5. Step 5: Solve for x
    x = 202,716,816.48/13,603.20
  6. Step 6: Final answer
    x = 14,902.14

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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.