Home / 15,129.99-22,678.17-11,420.19

Finding the Fourth Proportional to 15,129.99, 22,678.17 and 11,420.19

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Solution

The fourth proportional to 15,129.99, 22,678.17 and 11,420.19 is: 17,117.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,129.99 : 22,678.17 = 11,420.19 : x
  2. Step 2: Convert to fraction form
    15,129.99/22,678.17 = 11,420.19/x
  3. Step 3: Cross multiply
    15,129.99x = 22,678.17 × 11,420.19
  4. Step 4: Simplify right side
    15,129.99x = 258,989,010.25
  5. Step 5: Solve for x
    x = 258,989,010.25/15,129.99
  6. Step 6: Final answer
    x = 17,117.59

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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.