Home / 21,177.84-31,776.99-14,977.70

Finding the Fourth Proportional to 21,177.84, 31,776.99 and 14,977.70

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Solution

The fourth proportional to 21,177.84, 31,776.99 and 14,977.70 is: 22,473.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.84 : 31,776.99 = 14,977.70 : x
  2. Step 2: Convert to fraction form
    21,177.84/31,776.99 = 14,977.70/x
  3. Step 3: Cross multiply
    21,177.84x = 31,776.99 × 14,977.70
  4. Step 4: Simplify right side
    21,177.84x = 475,946,223.12
  5. Step 5: Solve for x
    x = 475,946,223.12/21,177.84
  6. Step 6: Final answer
    x = 22,473.79

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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.