Home / 18,918-26,108.69-10,534.50

Finding the Fourth Proportional to 18,918, 26,108.69 and 10,534.50

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Solution

The fourth proportional to 18,918, 26,108.69 and 10,534.50 is: 14,538.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918 : 26,108.69 = 10,534.50 : x
  2. Step 2: Convert to fraction form
    18,918/26,108.69 = 10,534.50/x
  3. Step 3: Cross multiply
    18,918x = 26,108.69 × 10,534.50
  4. Step 4: Simplify right side
    18,918x = 275,041,942.13
  5. Step 5: Solve for x
    x = 275,041,942.13/18,918
  6. Step 6: Final answer
    x = 14,538.64

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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.