Home / 30,157.52-45,258.14-21,214.05

Finding the Fourth Proportional to 30,157.52, 45,258.14 and 21,214.05

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Solution

The fourth proportional to 30,157.52, 45,258.14 and 21,214.05 is: 31,836.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,157.52 : 45,258.14 = 21,214.05 : x
  2. Step 2: Convert to fraction form
    30,157.52/45,258.14 = 21,214.05/x
  3. Step 3: Cross multiply
    30,157.52x = 45,258.14 × 21,214.05
  4. Step 4: Simplify right side
    30,157.52x = 960,108,582.76
  5. Step 5: Solve for x
    x = 960,108,582.76/30,157.52
  6. Step 6: Final answer
    x = 31,836.46

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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.