Home / 20,952.90-28,914.57-11,392.98

Finding the Fourth Proportional to 20,952.90, 28,914.57 and 11,392.98

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Solution

The fourth proportional to 20,952.90, 28,914.57 and 11,392.98 is: 15,722.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.90 : 28,914.57 = 11,392.98 : x
  2. Step 2: Convert to fraction form
    20,952.90/28,914.57 = 11,392.98/x
  3. Step 3: Cross multiply
    20,952.90x = 28,914.57 × 11,392.98
  4. Step 4: Simplify right side
    20,952.90x = 329,423,009.29
  5. Step 5: Solve for x
    x = 329,423,009.29/20,952.90
  6. Step 6: Final answer
    x = 15,722.07

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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.