Home / 30,430.30-45,645.45-17,308.30

Finding the Fourth Proportional to 30,430.30, 45,645.45 and 17,308.30

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Solution

The fourth proportional to 30,430.30, 45,645.45 and 17,308.30 is: 25,962.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,430.30 : 45,645.45 = 17,308.30 : x
  2. Step 2: Convert to fraction form
    30,430.30/45,645.45 = 17,308.30/x
  3. Step 3: Cross multiply
    30,430.30x = 45,645.45 × 17,308.30
  4. Step 4: Simplify right side
    30,430.30x = 790,045,142.24
  5. Step 5: Solve for x
    x = 790,045,142.24/30,430.30
  6. Step 6: Final answer
    x = 25,962.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.