Home / 23,135.18-31,980.36-20,642.00

Finding the Fourth Proportional to 23,135.18, 31,980.36 and 20,642.00

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Solution

The fourth proportional to 23,135.18, 31,980.36 and 20,642.00 is: 28,533.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,135.18 : 31,980.36 = 20,642.00 : x
  2. Step 2: Convert to fraction form
    23,135.18/31,980.36 = 20,642.00/x
  3. Step 3: Cross multiply
    23,135.18x = 31,980.36 × 20,642.00
  4. Step 4: Simplify right side
    23,135.18x = 660,138,431.22
  5. Step 5: Solve for x
    x = 660,138,431.22/23,135.18
  6. Step 6: Final answer
    x = 28,533.97

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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.