Home / 20,346.84-28,077.39-11,392.83

Finding the Fourth Proportional to 20,346.84, 28,077.39 and 11,392.83

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Solution

The fourth proportional to 20,346.84, 28,077.39 and 11,392.83 is: 15,721.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.84 : 28,077.39 = 11,392.83 : x
  2. Step 2: Convert to fraction form
    20,346.84/28,077.39 = 11,392.83/x
  3. Step 3: Cross multiply
    20,346.84x = 28,077.39 × 11,392.83
  4. Step 4: Simplify right side
    20,346.84x = 319,880,931.11
  5. Step 5: Solve for x
    x = 319,880,931.11/20,346.84
  6. Step 6: Final answer
    x = 15,721.41

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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.