Home / 28,526.36-42,771.32-13,705.80

Finding the Fourth Proportional to 28,526.36, 42,771.32 and 13,705.80

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Solution

The fourth proportional to 28,526.36, 42,771.32 and 13,705.80 is: 20,549.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,526.36 : 42,771.32 = 13,705.80 : x
  2. Step 2: Convert to fraction form
    28,526.36/42,771.32 = 13,705.80/x
  3. Step 3: Cross multiply
    28,526.36x = 42,771.32 × 13,705.80
  4. Step 4: Simplify right side
    28,526.36x = 586,215,157.66
  5. Step 5: Solve for x
    x = 586,215,157.66/28,526.36
  6. Step 6: Final answer
    x = 20,549.95

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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.