Home / 30,000.43-45,008.99-13,130.44

Finding the Fourth Proportional to 30,000.43, 45,008.99 and 13,130.44

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Solution

The fourth proportional to 30,000.43, 45,008.99 and 13,130.44 is: 19,699.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,000.43 : 45,008.99 = 13,130.44 : x
  2. Step 2: Convert to fraction form
    30,000.43/45,008.99 = 13,130.44/x
  3. Step 3: Cross multiply
    30,000.43x = 45,008.99 × 13,130.44
  4. Step 4: Simplify right side
    30,000.43x = 590,987,842.66
  5. Step 5: Solve for x
    x = 590,987,842.66/30,000.43
  6. Step 6: Final answer
    x = 19,699.31

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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.