Home / 28,100.71-42,205.74-20,675.85

Finding the Fourth Proportional to 28,100.71, 42,205.74 and 20,675.85

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Solution

The fourth proportional to 28,100.71, 42,205.74 and 20,675.85 is: 31,054.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,100.71 : 42,205.74 = 20,675.85 : x
  2. Step 2: Convert to fraction form
    28,100.71/42,205.74 = 20,675.85/x
  3. Step 3: Cross multiply
    28,100.71x = 42,205.74 × 20,675.85
  4. Step 4: Simplify right side
    28,100.71x = 872,639,549.38
  5. Step 5: Solve for x
    x = 872,639,549.38/28,100.71
  6. Step 6: Final answer
    x = 31,054.00

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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.