Home / 30,010.79-45,028.31-13,359.45

Finding the Fourth Proportional to 30,010.79, 45,028.31 and 13,359.45

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Solution

The fourth proportional to 30,010.79, 45,028.31 and 13,359.45 is: 20,044.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,010.79 : 45,028.31 = 13,359.45 : x
  2. Step 2: Convert to fraction form
    30,010.79/45,028.31 = 13,359.45/x
  3. Step 3: Cross multiply
    30,010.79x = 45,028.31 × 13,359.45
  4. Step 4: Simplify right side
    30,010.79x = 601,553,389.23
  5. Step 5: Solve for x
    x = 601,553,389.23/30,010.79
  6. Step 6: Final answer
    x = 20,044.57

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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.