Home / 15,221.33-21,018.80-9,565.88

Finding the Fourth Proportional to 15,221.33, 21,018.80 and 9,565.88

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Solution

The fourth proportional to 15,221.33, 21,018.80 and 9,565.88 is: 13,209.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,221.33 : 21,018.80 = 9,565.88 : x
  2. Step 2: Convert to fraction form
    15,221.33/21,018.80 = 9,565.88/x
  3. Step 3: Cross multiply
    15,221.33x = 21,018.80 × 9,565.88
  4. Step 4: Simplify right side
    15,221.33x = 201,063,270.71
  5. Step 5: Solve for x
    x = 201,063,270.71/15,221.33
  6. Step 6: Final answer
    x = 13,209.31

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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.