Home / 20,574.12-28,392.33-11,142.69

Finding the Fourth Proportional to 20,574.12, 28,392.33 and 11,142.69

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Solution

The fourth proportional to 20,574.12, 28,392.33 and 11,142.69 is: 15,376.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,574.12 : 28,392.33 = 11,142.69 : x
  2. Step 2: Convert to fraction form
    20,574.12/28,392.33 = 11,142.69/x
  3. Step 3: Cross multiply
    20,574.12x = 28,392.33 × 11,142.69
  4. Step 4: Simplify right side
    20,574.12x = 316,366,733.89
  5. Step 5: Solve for x
    x = 316,366,733.89/20,574.12
  6. Step 6: Final answer
    x = 15,376.93

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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.