Home / 13,411.09-18,509.88-8,632.63

Finding the Fourth Proportional to 13,411.09, 18,509.88 and 8,632.63

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Solution

The fourth proportional to 13,411.09, 18,509.88 and 8,632.63 is: 11,914.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,411.09 : 18,509.88 = 8,632.63 : x
  2. Step 2: Convert to fraction form
    13,411.09/18,509.88 = 8,632.63/x
  3. Step 3: Cross multiply
    13,411.09x = 18,509.88 × 8,632.63
  4. Step 4: Simplify right side
    13,411.09x = 159,788,945.38
  5. Step 5: Solve for x
    x = 159,788,945.38/13,411.09
  6. Step 6: Final answer
    x = 11,914.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.