Home / 31,807.08-43,871.63-18,376.07

Finding the Fourth Proportional to 31,807.08, 43,871.63 and 18,376.07

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Solution

The fourth proportional to 31,807.08, 43,871.63 and 18,376.07 is: 25,346.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,807.08 : 43,871.63 = 18,376.07 : x
  2. Step 2: Convert to fraction form
    31,807.08/43,871.63 = 18,376.07/x
  3. Step 3: Cross multiply
    31,807.08x = 43,871.63 × 18,376.07
  4. Step 4: Simplify right side
    31,807.08x = 806,187,832.66
  5. Step 5: Solve for x
    x = 806,187,832.66/31,807.08
  6. Step 6: Final answer
    x = 25,346.18

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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.