Home / 15,502.98-21,401.46-9,917.22

Finding the Fourth Proportional to 15,502.98, 21,401.46 and 9,917.22

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Solution

The fourth proportional to 15,502.98, 21,401.46 and 9,917.22 is: 13,690.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502.98 : 21,401.46 = 9,917.22 : x
  2. Step 2: Convert to fraction form
    15,502.98/21,401.46 = 9,917.22/x
  3. Step 3: Cross multiply
    15,502.98x = 21,401.46 × 9,917.22
  4. Step 4: Simplify right side
    15,502.98x = 212,242,987.14
  5. Step 5: Solve for x
    x = 212,242,987.14/15,502.98
  6. Step 6: Final answer
    x = 13,690.46

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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.