Home / 20,984.94-28,957.91-11,553.50

Finding the Fourth Proportional to 20,984.94, 28,957.91 and 11,553.50

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Solution

The fourth proportional to 20,984.94, 28,957.91 and 11,553.50 is: 15,943.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.94 : 28,957.91 = 11,553.50 : x
  2. Step 2: Convert to fraction form
    20,984.94/28,957.91 = 11,553.50/x
  3. Step 3: Cross multiply
    20,984.94x = 28,957.91 × 11,553.50
  4. Step 4: Simplify right side
    20,984.94x = 334,565,227.81
  5. Step 5: Solve for x
    x = 334,565,227.81/20,984.94
  6. Step 6: Final answer
    x = 15,943.11

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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.