Home / 11,402.22-15,720.66-9,699.06

Finding the Fourth Proportional to 11,402.22, 15,720.66 and 9,699.06

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Solution

The fourth proportional to 11,402.22, 15,720.66 and 9,699.06 is: 13,372.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,402.22 : 15,720.66 = 9,699.06 : x
  2. Step 2: Convert to fraction form
    11,402.22/15,720.66 = 9,699.06/x
  3. Step 3: Cross multiply
    11,402.22x = 15,720.66 × 9,699.06
  4. Step 4: Simplify right side
    11,402.22x = 152,475,624.58
  5. Step 5: Solve for x
    x = 152,475,624.58/11,402.22
  6. Step 6: Final answer
    x = 13,372.45

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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.