Home / 30,281.32-41,752.47-20,725.81

Finding the Fourth Proportional to 30,281.32, 41,752.47 and 20,725.81

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Solution

The fourth proportional to 30,281.32, 41,752.47 and 20,725.81 is: 28,577.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,281.32 : 41,752.47 = 20,725.81 : x
  2. Step 2: Convert to fraction form
    30,281.32/41,752.47 = 20,725.81/x
  3. Step 3: Cross multiply
    30,281.32x = 41,752.47 × 20,725.81
  4. Step 4: Simplify right side
    30,281.32x = 865,353,760.25
  5. Step 5: Solve for x
    x = 865,353,760.25/30,281.32
  6. Step 6: Final answer
    x = 28,577.15

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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.