Home / 30,427.90-45,630.78-11,698.30

Finding the Fourth Proportional to 30,427.90, 45,630.78 and 11,698.30

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Solution

The fourth proportional to 30,427.90, 45,630.78 and 11,698.30 is: 17,543.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,427.90 : 45,630.78 = 11,698.30 : x
  2. Step 2: Convert to fraction form
    30,427.90/45,630.78 = 11,698.30/x
  3. Step 3: Cross multiply
    30,427.90x = 45,630.78 × 11,698.30
  4. Step 4: Simplify right side
    30,427.90x = 533,802,553.67
  5. Step 5: Solve for x
    x = 533,802,553.67/30,427.90
  6. Step 6: Final answer
    x = 17,543.19

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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.