Home / 15,548.32-21,457.20-9,259.84

Finding the Fourth Proportional to 15,548.32, 21,457.20 and 9,259.84

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Solution

The fourth proportional to 15,548.32, 21,457.20 and 9,259.84 is: 12,778.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,548.32 : 21,457.20 = 9,259.84 : x
  2. Step 2: Convert to fraction form
    15,548.32/21,457.20 = 9,259.84/x
  3. Step 3: Cross multiply
    15,548.32x = 21,457.20 × 9,259.84
  4. Step 4: Simplify right side
    15,548.32x = 198,690,238.85
  5. Step 5: Solve for x
    x = 198,690,238.85/15,548.32
  6. Step 6: Final answer
    x = 12,778.89

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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.