Home / 30,710.40-42,376.58-19,375.62

Finding the Fourth Proportional to 30,710.40, 42,376.58 and 19,375.62

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Solution

The fourth proportional to 30,710.40, 42,376.58 and 19,375.62 is: 26,735.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,710.40 : 42,376.58 = 19,375.62 : x
  2. Step 2: Convert to fraction form
    30,710.40/42,376.58 = 19,375.62/x
  3. Step 3: Cross multiply
    30,710.40x = 42,376.58 × 19,375.62
  4. Step 4: Simplify right side
    30,710.40x = 821,072,510.98
  5. Step 5: Solve for x
    x = 821,072,510.98/30,710.40
  6. Step 6: Final answer
    x = 26,735.98

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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.