Home / 31,165.88-43,012.02-18,590.63

Finding the Fourth Proportional to 31,165.88, 43,012.02 and 18,590.63

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Solution

The fourth proportional to 31,165.88, 43,012.02 and 18,590.63 is: 25,656.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,165.88 : 43,012.02 = 18,590.63 : x
  2. Step 2: Convert to fraction form
    31,165.88/43,012.02 = 18,590.63/x
  3. Step 3: Cross multiply
    31,165.88x = 43,012.02 × 18,590.63
  4. Step 4: Simplify right side
    31,165.88x = 799,620,334.31
  5. Step 5: Solve for x
    x = 799,620,334.31/31,165.88
  6. Step 6: Final answer
    x = 25,656.92

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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.