Home / 15,827.28-21,840.73-8,655.80

Finding the Fourth Proportional to 15,827.28, 21,840.73 and 8,655.80

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Solution

The fourth proportional to 15,827.28, 21,840.73 and 8,655.80 is: 11,944.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,827.28 : 21,840.73 = 8,655.80 : x
  2. Step 2: Convert to fraction form
    15,827.28/21,840.73 = 8,655.80/x
  3. Step 3: Cross multiply
    15,827.28x = 21,840.73 × 8,655.80
  4. Step 4: Simplify right side
    15,827.28x = 189,048,936.13
  5. Step 5: Solve for x
    x = 189,048,936.13/15,827.28
  6. Step 6: Final answer
    x = 11,944.50

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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.