Home / 31,129.04-42,952.20-18,554.96

Finding the Fourth Proportional to 31,129.04, 42,952.20 and 18,554.96

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Solution

The fourth proportional to 31,129.04, 42,952.20 and 18,554.96 is: 25,602.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,129.04 : 42,952.20 = 18,554.96 : x
  2. Step 2: Convert to fraction form
    31,129.04/42,952.20 = 18,554.96/x
  3. Step 3: Cross multiply
    31,129.04x = 42,952.20 × 18,554.96
  4. Step 4: Simplify right side
    31,129.04x = 796,976,352.91
  5. Step 5: Solve for x
    x = 796,976,352.91/31,129.04
  6. Step 6: Final answer
    x = 25,602.34

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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.