Home / 31,298.25-43,191.63-18,723

Finding the Fourth Proportional to 31,298.25, 43,191.63 and 18,723

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Solution

The fourth proportional to 31,298.25, 43,191.63 and 18,723 is: 25,837.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,298.25 : 43,191.63 = 18,723 : x
  2. Step 2: Convert to fraction form
    31,298.25/43,191.63 = 18,723/x
  3. Step 3: Cross multiply
    31,298.25x = 43,191.63 × 18,723
  4. Step 4: Simplify right side
    31,298.25x = 808,676,888.49
  5. Step 5: Solve for x
    x = 808,676,888.49/31,298.25
  6. Step 6: Final answer
    x = 25,837.77

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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.