Home / 12,666.66-18,999.78-4,877.16

Finding the Fourth Proportional to 12,666.66, 18,999.78 and 4,877.16

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Solution

The fourth proportional to 12,666.66, 18,999.78 and 4,877.16 is: 7,315.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,666.66 : 18,999.78 = 4,877.16 : x
  2. Step 2: Convert to fraction form
    12,666.66/18,999.78 = 4,877.16/x
  3. Step 3: Cross multiply
    12,666.66x = 18,999.78 × 4,877.16
  4. Step 4: Simplify right side
    12,666.66x = 92,664,967.02
  5. Step 5: Solve for x
    x = 92,664,967.02/12,666.66
  6. Step 6: Final answer
    x = 7,315.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.