Home / 22,051.18-30,430.10-11,979.39

Finding the Fourth Proportional to 22,051.18, 30,430.10 and 11,979.39

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Solution

The fourth proportional to 22,051.18, 30,430.10 and 11,979.39 is: 16,531.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,051.18 : 30,430.10 = 11,979.39 : x
  2. Step 2: Convert to fraction form
    22,051.18/30,430.10 = 11,979.39/x
  3. Step 3: Cross multiply
    22,051.18x = 30,430.10 × 11,979.39
  4. Step 4: Simplify right side
    22,051.18x = 364,533,975.74
  5. Step 5: Solve for x
    x = 364,533,975.74/22,051.18
  6. Step 6: Final answer
    x = 16,531.27

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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.