Home / 30,996.83-42,776.51-18,898.01

Finding the Fourth Proportional to 30,996.83, 42,776.51 and 18,898.01

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Solution

The fourth proportional to 30,996.83, 42,776.51 and 18,898.01 is: 26,079.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,996.83 : 42,776.51 = 18,898.01 : x
  2. Step 2: Convert to fraction form
    30,996.83/42,776.51 = 18,898.01/x
  3. Step 3: Cross multiply
    30,996.83x = 42,776.51 × 18,898.01
  4. Step 4: Simplify right side
    30,996.83x = 808,390,765.78
  5. Step 5: Solve for x
    x = 808,390,765.78/30,996.83
  6. Step 6: Final answer
    x = 26,079.79

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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.