Home / 20,292.64-28,008.52-13,206.76

Finding the Fourth Proportional to 20,292.64, 28,008.52 and 13,206.76

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Solution

The fourth proportional to 20,292.64, 28,008.52 and 13,206.76 is: 18,228.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.64 : 28,008.52 = 13,206.76 : x
  2. Step 2: Convert to fraction form
    20,292.64/28,008.52 = 13,206.76/x
  3. Step 3: Cross multiply
    20,292.64x = 28,008.52 × 13,206.76
  4. Step 4: Simplify right side
    20,292.64x = 369,901,801.60
  5. Step 5: Solve for x
    x = 369,901,801.60/20,292.64
  6. Step 6: Final answer
    x = 18,228.37

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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.