Home / 20,632.40-28,485.94-14,182.76

Finding the Fourth Proportional to 20,632.40, 28,485.94 and 14,182.76

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Solution

The fourth proportional to 20,632.40, 28,485.94 and 14,182.76 is: 19,581.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.40 : 28,485.94 = 14,182.76 : x
  2. Step 2: Convert to fraction form
    20,632.40/28,485.94 = 14,182.76/x
  3. Step 3: Cross multiply
    20,632.40x = 28,485.94 × 14,182.76
  4. Step 4: Simplify right side
    20,632.40x = 404,009,152.68
  5. Step 5: Solve for x
    x = 404,009,152.68/20,632.40
  6. Step 6: Final answer
    x = 19,581.30

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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.