Home / 12,666.21-18,999.71-4,346.11

Finding the Fourth Proportional to 12,666.21, 18,999.71 and 4,346.11

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Solution

The fourth proportional to 12,666.21, 18,999.71 and 4,346.11 is: 6,519.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,666.21 : 18,999.71 = 4,346.11 : x
  2. Step 2: Convert to fraction form
    12,666.21/18,999.71 = 4,346.11/x
  3. Step 3: Cross multiply
    12,666.21x = 18,999.71 × 4,346.11
  4. Step 4: Simplify right side
    12,666.21x = 82,574,807.90
  5. Step 5: Solve for x
    x = 82,574,807.90/12,666.21
  6. Step 6: Final answer
    x = 6,519.30

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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.