Home / 20,300.04-28,018.58-12,340.58

Finding the Fourth Proportional to 20,300.04, 28,018.58 and 12,340.58

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Solution

The fourth proportional to 20,300.04, 28,018.58 and 12,340.58 is: 17,032.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.04 : 28,018.58 = 12,340.58 : x
  2. Step 2: Convert to fraction form
    20,300.04/28,018.58 = 12,340.58/x
  3. Step 3: Cross multiply
    20,300.04x = 28,018.58 × 12,340.58
  4. Step 4: Simplify right side
    20,300.04x = 345,765,326.18
  5. Step 5: Solve for x
    x = 345,765,326.18/20,300.04
  6. Step 6: Final answer
    x = 17,032.74

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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.