Home / 11,998.72-18,030.08-6,456.32

Finding the Fourth Proportional to 11,998.72, 18,030.08 and 6,456.32

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Solution

The fourth proportional to 11,998.72, 18,030.08 and 6,456.32 is: 9,701.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.72 : 18,030.08 = 6,456.32 : x
  2. Step 2: Convert to fraction form
    11,998.72/18,030.08 = 6,456.32/x
  3. Step 3: Cross multiply
    11,998.72x = 18,030.08 × 6,456.32
  4. Step 4: Simplify right side
    11,998.72x = 116,407,966.11
  5. Step 5: Solve for x
    x = 116,407,966.11/11,998.72
  6. Step 6: Final answer
    x = 9,701.70

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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.