Home / 30,952.56-42,715.40-18,206.68

Finding the Fourth Proportional to 30,952.56, 42,715.40 and 18,206.68

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Solution

The fourth proportional to 30,952.56, 42,715.40 and 18,206.68 is: 25,125.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,952.56 : 42,715.40 = 18,206.68 : x
  2. Step 2: Convert to fraction form
    30,952.56/42,715.40 = 18,206.68/x
  3. Step 3: Cross multiply
    30,952.56x = 42,715.40 × 18,206.68
  4. Step 4: Simplify right side
    30,952.56x = 777,705,618.87
  5. Step 5: Solve for x
    x = 777,705,618.87/30,952.56
  6. Step 6: Final answer
    x = 25,125.73

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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.