Home / 20,320.40-28,054.26-12,773.12

Finding the Fourth Proportional to 20,320.40, 28,054.26 and 12,773.12

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Solution

The fourth proportional to 20,320.40, 28,054.26 and 12,773.12 is: 17,634.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.40 : 28,054.26 = 12,773.12 : x
  2. Step 2: Convert to fraction form
    20,320.40/28,054.26 = 12,773.12/x
  3. Step 3: Cross multiply
    20,320.40x = 28,054.26 × 12,773.12
  4. Step 4: Simplify right side
    20,320.40x = 358,340,429.49
  5. Step 5: Solve for x
    x = 358,340,429.49/20,320.40
  6. Step 6: Final answer
    x = 17,634.52

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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.