Home / 13,800.24-20,686.86-5,477.49

Finding the Fourth Proportional to 13,800.24, 20,686.86 and 5,477.49

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Solution

The fourth proportional to 13,800.24, 20,686.86 and 5,477.49 is: 8,210.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,800.24 : 20,686.86 = 5,477.49 : x
  2. Step 2: Convert to fraction form
    13,800.24/20,686.86 = 5,477.49/x
  3. Step 3: Cross multiply
    13,800.24x = 20,686.86 × 5,477.49
  4. Step 4: Simplify right side
    13,800.24x = 113,312,068.78
  5. Step 5: Solve for x
    x = 113,312,068.78/13,800.24
  6. Step 6: Final answer
    x = 8,210.88

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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.