Home / 30,888.59-42,633.88-20,292.57

Finding the Fourth Proportional to 30,888.59, 42,633.88 and 20,292.57

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Solution

The fourth proportional to 30,888.59, 42,633.88 and 20,292.57 is: 28,008.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,888.59 : 42,633.88 = 20,292.57 : x
  2. Step 2: Convert to fraction form
    30,888.59/42,633.88 = 20,292.57/x
  3. Step 3: Cross multiply
    30,888.59x = 42,633.88 × 20,292.57
  4. Step 4: Simplify right side
    30,888.59x = 865,150,943.54
  5. Step 5: Solve for x
    x = 865,150,943.54/30,888.59
  6. Step 6: Final answer
    x = 28,008.76

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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.