Home / 30,946.84-42,685.50-19,763.80

Finding the Fourth Proportional to 30,946.84, 42,685.50 and 19,763.80

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Solution

The fourth proportional to 30,946.84, 42,685.50 and 19,763.80 is: 27,260.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,946.84 : 42,685.50 = 19,763.80 : x
  2. Step 2: Convert to fraction form
    30,946.84/42,685.50 = 19,763.80/x
  3. Step 3: Cross multiply
    30,946.84x = 42,685.50 × 19,763.80
  4. Step 4: Simplify right side
    30,946.84x = 843,627,684.90
  5. Step 5: Solve for x
    x = 843,627,684.90/30,946.84
  6. Step 6: Final answer
    x = 27,260.54

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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.