Home / 30,628.26-42,271.54-18,698.51

Finding the Fourth Proportional to 30,628.26, 42,271.54 and 18,698.51

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Solution

The fourth proportional to 30,628.26, 42,271.54 and 18,698.51 is: 25,806.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,628.26 : 42,271.54 = 18,698.51 : x
  2. Step 2: Convert to fraction form
    30,628.26/42,271.54 = 18,698.51/x
  3. Step 3: Cross multiply
    30,628.26x = 42,271.54 × 18,698.51
  4. Step 4: Simplify right side
    30,628.26x = 790,414,872.34
  5. Step 5: Solve for x
    x = 790,414,872.34/30,628.26
  6. Step 6: Final answer
    x = 25,806.72

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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.