Home / 15,302.72-21,118.14-8,588.86

Finding the Fourth Proportional to 15,302.72, 21,118.14 and 8,588.86

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Solution

The fourth proportional to 15,302.72, 21,118.14 and 8,588.86 is: 11,852.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,302.72 : 21,118.14 = 8,588.86 : x
  2. Step 2: Convert to fraction form
    15,302.72/21,118.14 = 8,588.86/x
  3. Step 3: Cross multiply
    15,302.72x = 21,118.14 × 8,588.86
  4. Step 4: Simplify right side
    15,302.72x = 181,380,695.13
  5. Step 5: Solve for x
    x = 181,380,695.13/15,302.72
  6. Step 6: Final answer
    x = 11,852.84

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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.