Home / 28,225.18-42,338.37-9,505.78

Finding the Fourth Proportional to 28,225.18, 42,338.37 and 9,505.78

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Solution

The fourth proportional to 28,225.18, 42,338.37 and 9,505.78 is: 14,258.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,225.18 : 42,338.37 = 9,505.78 : x
  2. Step 2: Convert to fraction form
    28,225.18/42,338.37 = 9,505.78/x
  3. Step 3: Cross multiply
    28,225.18x = 42,338.37 × 9,505.78
  4. Step 4: Simplify right side
    28,225.18x = 402,459,230.78
  5. Step 5: Solve for x
    x = 402,459,230.78/28,225.18
  6. Step 6: Final answer
    x = 14,258.87

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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.