Home / 30,956.40-42,698.16-19,474.65

Finding the Fourth Proportional to 30,956.40, 42,698.16 and 19,474.65

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Solution

The fourth proportional to 30,956.40, 42,698.16 and 19,474.65 is: 26,861.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,956.40 : 42,698.16 = 19,474.65 : x
  2. Step 2: Convert to fraction form
    30,956.40/42,698.16 = 19,474.65/x
  3. Step 3: Cross multiply
    30,956.40x = 42,698.16 × 19,474.65
  4. Step 4: Simplify right side
    30,956.40x = 831,531,721.64
  5. Step 5: Solve for x
    x = 831,531,721.64/30,956.40
  6. Step 6: Final answer
    x = 26,861.38

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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.