Home / 20,804.47-28,649.69-18,077.85

Finding the Fourth Proportional to 20,804.47, 28,649.69 and 18,077.85

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Solution

The fourth proportional to 20,804.47, 28,649.69 and 18,077.85 is: 24,894.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.47 : 28,649.69 = 18,077.85 : x
  2. Step 2: Convert to fraction form
    20,804.47/28,649.69 = 18,077.85/x
  3. Step 3: Cross multiply
    20,804.47x = 28,649.69 × 18,077.85
  4. Step 4: Simplify right side
    20,804.47x = 517,924,798.37
  5. Step 5: Solve for x
    x = 517,924,798.37/20,804.47
  6. Step 6: Final answer
    x = 24,894.88

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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.