Home / 30,148.84-41,606.40-18,209.80

Finding the Fourth Proportional to 30,148.84, 41,606.40 and 18,209.80

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Solution

The fourth proportional to 30,148.84, 41,606.40 and 18,209.80 is: 25,130.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,148.84 : 41,606.40 = 18,209.80 : x
  2. Step 2: Convert to fraction form
    30,148.84/41,606.40 = 18,209.80/x
  3. Step 3: Cross multiply
    30,148.84x = 41,606.40 × 18,209.80
  4. Step 4: Simplify right side
    30,148.84x = 757,644,222.72
  5. Step 5: Solve for x
    x = 757,644,222.72/30,148.84
  6. Step 6: Final answer
    x = 25,130.13

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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.