Home / 23,101.12-31,879.40-12,490.64

Finding the Fourth Proportional to 23,101.12, 31,879.40 and 12,490.64

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Solution

The fourth proportional to 23,101.12, 31,879.40 and 12,490.64 is: 17,237.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,101.12 : 31,879.40 = 12,490.64 : x
  2. Step 2: Convert to fraction form
    23,101.12/31,879.40 = 12,490.64/x
  3. Step 3: Cross multiply
    23,101.12x = 31,879.40 × 12,490.64
  4. Step 4: Simplify right side
    23,101.12x = 398,194,108.82
  5. Step 5: Solve for x
    x = 398,194,108.82/23,101.12
  6. Step 6: Final answer
    x = 17,237.00

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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.