Home / 20,970.52-28,936.74-12,472.84

Finding the Fourth Proportional to 20,970.52, 28,936.74 and 12,472.84

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Solution

The fourth proportional to 20,970.52, 28,936.74 and 12,472.84 is: 17,210.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970.52 : 28,936.74 = 12,472.84 : x
  2. Step 2: Convert to fraction form
    20,970.52/28,936.74 = 12,472.84/x
  3. Step 3: Cross multiply
    20,970.52x = 28,936.74 × 12,472.84
  4. Step 4: Simplify right side
    20,970.52x = 360,923,328.14
  5. Step 5: Solve for x
    x = 360,923,328.14/20,970.52
  6. Step 6: Final answer
    x = 17,210.99

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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.