Home / 30,710.16-42,379.89-17,281.64

Finding the Fourth Proportional to 30,710.16, 42,379.89 and 17,281.64

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Solution

The fourth proportional to 30,710.16, 42,379.89 and 17,281.64 is: 23,848.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,710.16 : 42,379.89 = 17,281.64 : x
  2. Step 2: Convert to fraction form
    30,710.16/42,379.89 = 17,281.64/x
  3. Step 3: Cross multiply
    30,710.16x = 42,379.89 × 17,281.64
  4. Step 4: Simplify right side
    30,710.16x = 732,394,044.52
  5. Step 5: Solve for x
    x = 732,394,044.52/30,710.16
  6. Step 6: Final answer
    x = 23,848.59

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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.