Home / 15,909.36-21,955.80-8,835.84

Finding the Fourth Proportional to 15,909.36, 21,955.80 and 8,835.84

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Solution

The fourth proportional to 15,909.36, 21,955.80 and 8,835.84 is: 12,193.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.36 : 21,955.80 = 8,835.84 : x
  2. Step 2: Convert to fraction form
    15,909.36/21,955.80 = 8,835.84/x
  3. Step 3: Cross multiply
    15,909.36x = 21,955.80 × 8,835.84
  4. Step 4: Simplify right side
    15,909.36x = 193,997,935.87
  5. Step 5: Solve for x
    x = 193,997,935.87/15,909.36
  6. Step 6: Final answer
    x = 12,193.95

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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.