Home / 12,561.17-18,842.49-4,128.23

Finding the Fourth Proportional to 12,561.17, 18,842.49 and 4,128.23

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Solution

The fourth proportional to 12,561.17, 18,842.49 and 4,128.23 is: 6,192.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,561.17 : 18,842.49 = 4,128.23 : x
  2. Step 2: Convert to fraction form
    12,561.17/18,842.49 = 4,128.23/x
  3. Step 3: Cross multiply
    12,561.17x = 18,842.49 × 4,128.23
  4. Step 4: Simplify right side
    12,561.17x = 77,786,038.28
  5. Step 5: Solve for x
    x = 77,786,038.28/12,561.17
  6. Step 6: Final answer
    x = 6,192.58

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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.