Home / 31,539.88-43,501.62-21,465.16

Finding the Fourth Proportional to 31,539.88, 43,501.62 and 21,465.16

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Solution

The fourth proportional to 31,539.88, 43,501.62 and 21,465.16 is: 29,605.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,539.88 : 43,501.62 = 21,465.16 : x
  2. Step 2: Convert to fraction form
    31,539.88/43,501.62 = 21,465.16/x
  3. Step 3: Cross multiply
    31,539.88x = 43,501.62 × 21,465.16
  4. Step 4: Simplify right side
    31,539.88x = 933,769,233.56
  5. Step 5: Solve for x
    x = 933,769,233.56/31,539.88
  6. Step 6: Final answer
    x = 29,605.99

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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.