Home / 23,180.68-31,989.10-13,111.08

Finding the Fourth Proportional to 23,180.68, 31,989.10 and 13,111.08

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Solution

The fourth proportional to 23,180.68, 31,989.10 and 13,111.08 is: 18,093.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,180.68 : 31,989.10 = 13,111.08 : x
  2. Step 2: Convert to fraction form
    23,180.68/31,989.10 = 13,111.08/x
  3. Step 3: Cross multiply
    23,180.68x = 31,989.10 × 13,111.08
  4. Step 4: Simplify right side
    23,180.68x = 419,411,649.23
  5. Step 5: Solve for x
    x = 419,411,649.23/23,180.68
  6. Step 6: Final answer
    x = 18,093.16

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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.