Home / 11,971.01-16,520-6,666.32

Finding the Fourth Proportional to 11,971.01, 16,520 and 6,666.32

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Solution

The fourth proportional to 11,971.01, 16,520 and 6,666.32 is: 9,199.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,971.01 : 16,520 = 6,666.32 : x
  2. Step 2: Convert to fraction form
    11,971.01/16,520 = 6,666.32/x
  3. Step 3: Cross multiply
    11,971.01x = 16,520 × 6,666.32
  4. Step 4: Simplify right side
    11,971.01x = 110,127,606.40
  5. Step 5: Solve for x
    x = 110,127,606.40/11,971.01
  6. Step 6: Final answer
    x = 9,199.53

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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.