Home / 30,159.32-45,253.70-21,331.37

Finding the Fourth Proportional to 30,159.32, 45,253.70 and 21,331.37

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Solution

The fourth proportional to 30,159.32, 45,253.70 and 21,331.37 is: 32,007.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,159.32 : 45,253.70 = 21,331.37 : x
  2. Step 2: Convert to fraction form
    30,159.32/45,253.70 = 21,331.37/x
  3. Step 3: Cross multiply
    30,159.32x = 45,253.70 × 21,331.37
  4. Step 4: Simplify right side
    30,159.32x = 965,323,085.64
  5. Step 5: Solve for x
    x = 965,323,085.64/30,159.32
  6. Step 6: Final answer
    x = 32,007.46

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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.