Home / 20,963.81-28,930.51-11,532.37

Finding the Fourth Proportional to 20,963.81, 28,930.51 and 11,532.37

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Solution

The fourth proportional to 20,963.81, 28,930.51 and 11,532.37 is: 15,914.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.81 : 28,930.51 = 11,532.37 : x
  2. Step 2: Convert to fraction form
    20,963.81/28,930.51 = 11,532.37/x
  3. Step 3: Cross multiply
    20,963.81x = 28,930.51 × 11,532.37
  4. Step 4: Simplify right side
    20,963.81x = 333,637,345.61
  5. Step 5: Solve for x
    x = 333,637,345.61/20,963.81
  6. Step 6: Final answer
    x = 15,914.92

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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.