Home / 28,125.68-42,208.97-20,749.95

Finding the Fourth Proportional to 28,125.68, 42,208.97 and 20,749.95

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Solution

The fourth proportional to 28,125.68, 42,208.97 and 20,749.95 is: 31,140.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.68 : 42,208.97 = 20,749.95 : x
  2. Step 2: Convert to fraction form
    28,125.68/42,208.97 = 20,749.95/x
  3. Step 3: Cross multiply
    28,125.68x = 42,208.97 × 20,749.95
  4. Step 4: Simplify right side
    28,125.68x = 875,833,913.30
  5. Step 5: Solve for x
    x = 875,833,913.30/28,125.68
  6. Step 6: Final answer
    x = 31,140.01

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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.