Home / 30,971.76-42,739.59-17,360.97

Finding the Fourth Proportional to 30,971.76, 42,739.59 and 17,360.97

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Solution

The fourth proportional to 30,971.76, 42,739.59 and 17,360.97 is: 23,957.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,971.76 : 42,739.59 = 17,360.97 : x
  2. Step 2: Convert to fraction form
    30,971.76/42,739.59 = 17,360.97/x
  3. Step 3: Cross multiply
    30,971.76x = 42,739.59 × 17,360.97
  4. Step 4: Simplify right side
    30,971.76x = 742,000,739.80
  5. Step 5: Solve for x
    x = 742,000,739.80/30,971.76
  6. Step 6: Final answer
    x = 23,957.33

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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.