Home / 20,574.72-30,827.52-12,802.56

Finding the Fourth Proportional to 20,574.72, 30,827.52 and 12,802.56

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Solution

The fourth proportional to 20,574.72, 30,827.52 and 12,802.56 is: 19,182.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,574.72 : 30,827.52 = 12,802.56 : x
  2. Step 2: Convert to fraction form
    20,574.72/30,827.52 = 12,802.56/x
  3. Step 3: Cross multiply
    20,574.72x = 30,827.52 × 12,802.56
  4. Step 4: Simplify right side
    20,574.72x = 394,671,174.45
  5. Step 5: Solve for x
    x = 394,671,174.45/20,574.72
  6. Step 6: Final answer
    x = 19,182.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.