Home / 20,927.60-28,840.32-20,543.36

Finding the Fourth Proportional to 20,927.60, 28,840.32 and 20,543.36

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Solution

The fourth proportional to 20,927.60, 28,840.32 and 20,543.36 is: 28,310.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.60 : 28,840.32 = 20,543.36 : x
  2. Step 2: Convert to fraction form
    20,927.60/28,840.32 = 20,543.36/x
  3. Step 3: Cross multiply
    20,927.60x = 28,840.32 × 20,543.36
  4. Step 4: Simplify right side
    20,927.60x = 592,477,076.28
  5. Step 5: Solve for x
    x = 592,477,076.28/20,927.60
  6. Step 6: Final answer
    x = 28,310.80

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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.