Home / 28,000.95-42,007.57-20,582.92

Finding the Fourth Proportional to 28,000.95, 42,007.57 and 20,582.92

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Solution

The fourth proportional to 28,000.95, 42,007.57 and 20,582.92 is: 30,878.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.95 : 42,007.57 = 20,582.92 : x
  2. Step 2: Convert to fraction form
    28,000.95/42,007.57 = 20,582.92/x
  3. Step 3: Cross multiply
    28,000.95x = 42,007.57 × 20,582.92
  4. Step 4: Simplify right side
    28,000.95x = 864,638,453.76
  5. Step 5: Solve for x
    x = 864,638,453.76/28,000.95
  6. Step 6: Final answer
    x = 30,878.90

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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.