Home / 30,660.66-42,272.66-20,573.12

Finding the Fourth Proportional to 30,660.66, 42,272.66 and 20,573.12

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Solution

The fourth proportional to 30,660.66, 42,272.66 and 20,573.12 is: 28,364.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,660.66 : 42,272.66 = 20,573.12 : x
  2. Step 2: Convert to fraction form
    30,660.66/42,272.66 = 20,573.12/x
  3. Step 3: Cross multiply
    30,660.66x = 42,272.66 × 20,573.12
  4. Step 4: Simplify right side
    30,660.66x = 869,680,192.67
  5. Step 5: Solve for x
    x = 869,680,192.67/30,660.66
  6. Step 6: Final answer
    x = 28,364.69

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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.