Home / 20,296.40-28,008.93-11,343.89

Finding the Fourth Proportional to 20,296.40, 28,008.93 and 11,343.89

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Solution

The fourth proportional to 20,296.40, 28,008.93 and 11,343.89 is: 15,654.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.40 : 28,008.93 = 11,343.89 : x
  2. Step 2: Convert to fraction form
    20,296.40/28,008.93 = 11,343.89/x
  3. Step 3: Cross multiply
    20,296.40x = 28,008.93 × 11,343.89
  4. Step 4: Simplify right side
    20,296.40x = 317,730,080.89
  5. Step 5: Solve for x
    x = 317,730,080.89/20,296.40
  6. Step 6: Final answer
    x = 15,654.51

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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.