Home / 28,325.79-42,500.21-18,205.50

Finding the Fourth Proportional to 28,325.79, 42,500.21 and 18,205.50

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Solution

The fourth proportional to 28,325.79, 42,500.21 and 18,205.50 is: 27,315.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,325.79 : 42,500.21 = 18,205.50 : x
  2. Step 2: Convert to fraction form
    28,325.79/42,500.21 = 18,205.50/x
  3. Step 3: Cross multiply
    28,325.79x = 42,500.21 × 18,205.50
  4. Step 4: Simplify right side
    28,325.79x = 773,737,482.13
  5. Step 5: Solve for x
    x = 773,737,482.13/28,325.79
  6. Step 6: Final answer
    x = 27,315.65

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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.