Home / 30,749.40-42,431.04-17,318.52

Finding the Fourth Proportional to 30,749.40, 42,431.04 and 17,318.52

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Solution

The fourth proportional to 30,749.40, 42,431.04 and 17,318.52 is: 23,897.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,749.40 : 42,431.04 = 17,318.52 : x
  2. Step 2: Convert to fraction form
    30,749.40/42,431.04 = 17,318.52/x
  3. Step 3: Cross multiply
    30,749.40x = 42,431.04 × 17,318.52
  4. Step 4: Simplify right side
    30,749.40x = 734,842,814.86
  5. Step 5: Solve for x
    x = 734,842,814.86/30,749.40
  6. Step 6: Final answer
    x = 23,897.79

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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.