Home / 21,783.12-30,056.08-12,827.36

Finding the Fourth Proportional to 21,783.12, 30,056.08 and 12,827.36

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Solution

The fourth proportional to 21,783.12, 30,056.08 and 12,827.36 is: 17,699.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,783.12 : 30,056.08 = 12,827.36 : x
  2. Step 2: Convert to fraction form
    21,783.12/30,056.08 = 12,827.36/x
  3. Step 3: Cross multiply
    21,783.12x = 30,056.08 × 12,827.36
  4. Step 4: Simplify right side
    21,783.12x = 385,540,158.35
  5. Step 5: Solve for x
    x = 385,540,158.35/21,783.12
  6. Step 6: Final answer
    x = 17,699.03

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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.