Home / 15,529.94-21,407.11-13,007.60

Finding the Fourth Proportional to 15,529.94, 21,407.11 and 13,007.60

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Solution

The fourth proportional to 15,529.94, 21,407.11 and 13,007.60 is: 17,930.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.94 : 21,407.11 = 13,007.60 : x
  2. Step 2: Convert to fraction form
    15,529.94/21,407.11 = 13,007.60/x
  3. Step 3: Cross multiply
    15,529.94x = 21,407.11 × 13,007.60
  4. Step 4: Simplify right side
    15,529.94x = 278,454,984.48
  5. Step 5: Solve for x
    x = 278,454,984.48/15,529.94
  6. Step 6: Final answer
    x = 17,930.21

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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.