Home / 28,503.82-42,765.09-13,710.79

Finding the Fourth Proportional to 28,503.82, 42,765.09 and 13,710.79

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Solution

The fourth proportional to 28,503.82, 42,765.09 and 13,710.79 is: 20,570.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,503.82 : 42,765.09 = 13,710.79 : x
  2. Step 2: Convert to fraction form
    28,503.82/42,765.09 = 13,710.79/x
  3. Step 3: Cross multiply
    28,503.82x = 42,765.09 × 13,710.79
  4. Step 4: Simplify right side
    28,503.82x = 586,343,168.32
  5. Step 5: Solve for x
    x = 586,343,168.32/28,503.82
  6. Step 6: Final answer
    x = 20,570.69

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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.