Home / 17,812.18-26,720.70-7,421.50

Finding the Fourth Proportional to 17,812.18, 26,720.70 and 7,421.50

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Solution

The fourth proportional to 17,812.18, 26,720.70 and 7,421.50 is: 11,133.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,812.18 : 26,720.70 = 7,421.50 : x
  2. Step 2: Convert to fraction form
    17,812.18/26,720.70 = 7,421.50/x
  3. Step 3: Cross multiply
    17,812.18x = 26,720.70 × 7,421.50
  4. Step 4: Simplify right side
    17,812.18x = 198,307,675.05
  5. Step 5: Solve for x
    x = 198,307,675.05/17,812.18
  6. Step 6: Final answer
    x = 11,133.26

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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.