Home / 28,095.30-42,121.35-15,783.30

Finding the Fourth Proportional to 28,095.30, 42,121.35 and 15,783.30

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Solution

The fourth proportional to 28,095.30, 42,121.35 and 15,783.30 is: 23,662.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,095.30 : 42,121.35 = 15,783.30 : x
  2. Step 2: Convert to fraction form
    28,095.30/42,121.35 = 15,783.30/x
  3. Step 3: Cross multiply
    28,095.30x = 42,121.35 × 15,783.30
  4. Step 4: Simplify right side
    28,095.30x = 664,813,903.46
  5. Step 5: Solve for x
    x = 664,813,903.46/28,095.30
  6. Step 6: Final answer
    x = 23,662.82

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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.