Home / 15,220.83-21,018.11-9,565.38

Finding the Fourth Proportional to 15,220.83, 21,018.11 and 9,565.38

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Solution

The fourth proportional to 15,220.83, 21,018.11 and 9,565.38 is: 13,208.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.83 : 21,018.11 = 9,565.38 : x
  2. Step 2: Convert to fraction form
    15,220.83/21,018.11 = 9,565.38/x
  3. Step 3: Cross multiply
    15,220.83x = 21,018.11 × 9,565.38
  4. Step 4: Simplify right side
    15,220.83x = 201,046,161.20
  5. Step 5: Solve for x
    x = 201,046,161.20/15,220.83
  6. Step 6: Final answer
    x = 13,208.62

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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.