Home / 28,242.80-42,336.66-13,447.74

Finding the Fourth Proportional to 28,242.80, 42,336.66 and 13,447.74

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Solution

The fourth proportional to 28,242.80, 42,336.66 and 13,447.74 is: 20,158.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,242.80 : 42,336.66 = 13,447.74 : x
  2. Step 2: Convert to fraction form
    28,242.80/42,336.66 = 13,447.74/x
  3. Step 3: Cross multiply
    28,242.80x = 42,336.66 × 13,447.74
  4. Step 4: Simplify right side
    28,242.80x = 569,332,396.15
  5. Step 5: Solve for x
    x = 569,332,396.15/28,242.80
  6. Step 6: Final answer
    x = 20,158.50

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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.