Home / 30,709.26-42,378.80-17,281.08

Finding the Fourth Proportional to 30,709.26, 42,378.80 and 17,281.08

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Solution

The fourth proportional to 30,709.26, 42,378.80 and 17,281.08 is: 23,847.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,709.26 : 42,378.80 = 17,281.08 : x
  2. Step 2: Convert to fraction form
    30,709.26/42,378.80 = 17,281.08/x
  3. Step 3: Cross multiply
    30,709.26x = 42,378.80 × 17,281.08
  4. Step 4: Simplify right side
    30,709.26x = 732,351,346.70
  5. Step 5: Solve for x
    x = 732,351,346.70/30,709.26
  6. Step 6: Final answer
    x = 23,847.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.