Home / 21,178.04-31,766.13-5,383.71

Finding the Fourth Proportional to 21,178.04, 31,766.13 and 5,383.71

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Solution

The fourth proportional to 21,178.04, 31,766.13 and 5,383.71 is: 8,075.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.04 : 31,766.13 = 5,383.71 : x
  2. Step 2: Convert to fraction form
    21,178.04/31,766.13 = 5,383.71/x
  3. Step 3: Cross multiply
    21,178.04x = 31,766.13 × 5,383.71
  4. Step 4: Simplify right side
    21,178.04x = 171,019,631.74
  5. Step 5: Solve for x
    x = 171,019,631.74/21,178.04
  6. Step 6: Final answer
    x = 8,075.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.