Home / 31,145.28-42,973.92-18,574.08

Finding the Fourth Proportional to 31,145.28, 42,973.92 and 18,574.08

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Solution

The fourth proportional to 31,145.28, 42,973.92 and 18,574.08 is: 25,628.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,145.28 : 42,973.92 = 18,574.08 : x
  2. Step 2: Convert to fraction form
    31,145.28/42,973.92 = 18,574.08/x
  3. Step 3: Cross multiply
    31,145.28x = 42,973.92 × 18,574.08
  4. Step 4: Simplify right side
    31,145.28x = 798,201,027.99
  5. Step 5: Solve for x
    x = 798,201,027.99/31,145.28
  6. Step 6: Final answer
    x = 25,628.31

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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.