Home / 30,712.96-42,386.10-17,285.56

Finding the Fourth Proportional to 30,712.96, 42,386.10 and 17,285.56

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Solution

The fourth proportional to 30,712.96, 42,386.10 and 17,285.56 is: 23,855.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,712.96 : 42,386.10 = 17,285.56 : x
  2. Step 2: Convert to fraction form
    30,712.96/42,386.10 = 17,285.56/x
  3. Step 3: Cross multiply
    30,712.96x = 42,386.10 × 17,285.56
  4. Step 4: Simplify right side
    30,712.96x = 732,667,474.72
  5. Step 5: Solve for x
    x = 732,667,474.72/30,712.96
  6. Step 6: Final answer
    x = 23,855.32

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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.