Home / 13,461.45-20,192.28-5,139.24

Finding the Fourth Proportional to 13,461.45, 20,192.28 and 5,139.24

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Solution

The fourth proportional to 13,461.45, 20,192.28 and 5,139.24 is: 7,708.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,461.45 : 20,192.28 = 5,139.24 : x
  2. Step 2: Convert to fraction form
    13,461.45/20,192.28 = 5,139.24/x
  3. Step 3: Cross multiply
    13,461.45x = 20,192.28 × 5,139.24
  4. Step 4: Simplify right side
    13,461.45x = 103,772,973.07
  5. Step 5: Solve for x
    x = 103,772,973.07/13,461.45
  6. Step 6: Final answer
    x = 7,708.90

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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.