Home / 20,748.08-28,628.88-19,697.24

Finding the Fourth Proportional to 20,748.08, 28,628.88 and 19,697.24

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Solution

The fourth proportional to 20,748.08, 28,628.88 and 19,697.24 is: 27,178.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.08 : 28,628.88 = 19,697.24 : x
  2. Step 2: Convert to fraction form
    20,748.08/28,628.88 = 19,697.24/x
  3. Step 3: Cross multiply
    20,748.08x = 28,628.88 × 19,697.24
  4. Step 4: Simplify right side
    20,748.08x = 563,909,920.29
  5. Step 5: Solve for x
    x = 563,909,920.29/20,748.08
  6. Step 6: Final answer
    x = 27,178.90

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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.