Home / 18,018.18-24,858.90-12,909.51

Finding the Fourth Proportional to 18,018.18, 24,858.90 and 12,909.51

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Solution

The fourth proportional to 18,018.18, 24,858.90 and 12,909.51 is: 17,810.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,018.18 : 24,858.90 = 12,909.51 : x
  2. Step 2: Convert to fraction form
    18,018.18/24,858.90 = 12,909.51/x
  3. Step 3: Cross multiply
    18,018.18x = 24,858.90 × 12,909.51
  4. Step 4: Simplify right side
    18,018.18x = 320,916,218.14
  5. Step 5: Solve for x
    x = 320,916,218.14/18,018.18
  6. Step 6: Final answer
    x = 17,810.69

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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.