Home / 20,562.64-28,348.22-13,005.20

Finding the Fourth Proportional to 20,562.64, 28,348.22 and 13,005.20

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Solution

The fourth proportional to 20,562.64, 28,348.22 and 13,005.20 is: 17,929.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.64 : 28,348.22 = 13,005.20 : x
  2. Step 2: Convert to fraction form
    20,562.64/28,348.22 = 13,005.20/x
  3. Step 3: Cross multiply
    20,562.64x = 28,348.22 × 13,005.20
  4. Step 4: Simplify right side
    20,562.64x = 368,674,270.74
  5. Step 5: Solve for x
    x = 368,674,270.74/20,562.64
  6. Step 6: Final answer
    x = 17,929.33

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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.