Home / 13,721.39-20,580.74-9,307.43

Finding the Fourth Proportional to 13,721.39, 20,580.74 and 9,307.43

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Solution

The fourth proportional to 13,721.39, 20,580.74 and 9,307.43 is: 13,960.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.39 : 20,580.74 = 9,307.43 : x
  2. Step 2: Convert to fraction form
    13,721.39/20,580.74 = 9,307.43/x
  3. Step 3: Cross multiply
    13,721.39x = 20,580.74 × 9,307.43
  4. Step 4: Simplify right side
    13,721.39x = 191,553,647.46
  5. Step 5: Solve for x
    x = 191,553,647.46/13,721.39
  6. Step 6: Final answer
    x = 13,960.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.