Home / 13,970.69-20,937.45-10,255.49

Finding the Fourth Proportional to 13,970.69, 20,937.45 and 10,255.49

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Solution

The fourth proportional to 13,970.69, 20,937.45 and 10,255.49 is: 15,369.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,970.69 : 20,937.45 = 10,255.49 : x
  2. Step 2: Convert to fraction form
    13,970.69/20,937.45 = 10,255.49/x
  3. Step 3: Cross multiply
    13,970.69x = 20,937.45 × 10,255.49
  4. Step 4: Simplify right side
    13,970.69x = 214,723,809.10
  5. Step 5: Solve for x
    x = 214,723,809.10/13,970.69
  6. Step 6: Final answer
    x = 15,369.59

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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.