Home / 30,707.40-42,372.44-19,372.62

Finding the Fourth Proportional to 30,707.40, 42,372.44 and 19,372.62

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Solution

The fourth proportional to 30,707.40, 42,372.44 and 19,372.62 is: 26,731.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,707.40 : 42,372.44 = 19,372.62 : x
  2. Step 2: Convert to fraction form
    30,707.40/42,372.44 = 19,372.62/x
  3. Step 3: Cross multiply
    30,707.40x = 42,372.44 × 19,372.62
  4. Step 4: Simplify right side
    30,707.40x = 820,865,178.59
  5. Step 5: Solve for x
    x = 820,865,178.59/30,707.40
  6. Step 6: Final answer
    x = 26,731.84

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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.