Home / 39,145.08-54,020.28-22,378.08

Finding the Fourth Proportional to 39,145.08, 54,020.28 and 22,378.08

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Solution

The fourth proportional to 39,145.08, 54,020.28 and 22,378.08 is: 30,881.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,145.08 : 54,020.28 = 22,378.08 : x
  2. Step 2: Convert to fraction form
    39,145.08/54,020.28 = 22,378.08/x
  3. Step 3: Cross multiply
    39,145.08x = 54,020.28 × 22,378.08
  4. Step 4: Simplify right side
    39,145.08x = 1,208,870,147.46
  5. Step 5: Solve for x
    x = 1,208,870,147.46/39,145.08
  6. Step 6: Final answer
    x = 30,881.79

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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.