Home / 20,710.32-28,582.64-12,326.88

Finding the Fourth Proportional to 20,710.32, 28,582.64 and 12,326.88

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Solution

The fourth proportional to 20,710.32, 28,582.64 and 12,326.88 is: 17,012.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.32 : 28,582.64 = 12,326.88 : x
  2. Step 2: Convert to fraction form
    20,710.32/28,582.64 = 12,326.88/x
  3. Step 3: Cross multiply
    20,710.32x = 28,582.64 × 12,326.88
  4. Step 4: Simplify right side
    20,710.32x = 352,334,773.36
  5. Step 5: Solve for x
    x = 352,334,773.36/20,710.32
  6. Step 6: Final answer
    x = 17,012.52

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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.