Home / 20,320.05-28,046.06-12,364.84

Finding the Fourth Proportional to 20,320.05, 28,046.06 and 12,364.84

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Solution

The fourth proportional to 20,320.05, 28,046.06 and 12,364.84 is: 17,066.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.05 : 28,046.06 = 12,364.84 : x
  2. Step 2: Convert to fraction form
    20,320.05/28,046.06 = 12,364.84/x
  3. Step 3: Cross multiply
    20,320.05x = 28,046.06 × 12,364.84
  4. Step 4: Simplify right side
    20,320.05x = 346,784,842.48
  5. Step 5: Solve for x
    x = 346,784,842.48/20,320.05
  6. Step 6: Final answer
    x = 17,066.14

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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.