Home / 28,237.80-42,329.16-13,442.75

Finding the Fourth Proportional to 28,237.80, 42,329.16 and 13,442.75

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Solution

The fourth proportional to 28,237.80, 42,329.16 and 13,442.75 is: 20,151.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,237.80 : 42,329.16 = 13,442.75 : x
  2. Step 2: Convert to fraction form
    28,237.80/42,329.16 = 13,442.75/x
  3. Step 3: Cross multiply
    28,237.80x = 42,329.16 × 13,442.75
  4. Step 4: Simplify right side
    28,237.80x = 569,020,103.94
  5. Step 5: Solve for x
    x = 569,020,103.94/28,237.80
  6. Step 6: Final answer
    x = 20,151.01

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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.