Home / 30,750.92-42,436.74-18,176.84

Finding the Fourth Proportional to 30,750.92, 42,436.74 and 18,176.84

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Solution

The fourth proportional to 30,750.92, 42,436.74 and 18,176.84 is: 25,084.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,750.92 : 42,436.74 = 18,176.84 : x
  2. Step 2: Convert to fraction form
    30,750.92/42,436.74 = 18,176.84/x
  3. Step 3: Cross multiply
    30,750.92x = 42,436.74 × 18,176.84
  4. Step 4: Simplify right side
    30,750.92x = 771,365,833.10
  5. Step 5: Solve for x
    x = 771,365,833.10/30,750.92
  6. Step 6: Final answer
    x = 25,084.32

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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.