Home / 30,707.48-42,377.13-17,279.21

Finding the Fourth Proportional to 30,707.48, 42,377.13 and 17,279.21

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Solution

The fourth proportional to 30,707.48, 42,377.13 and 17,279.21 is: 23,845.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,707.48 : 42,377.13 = 17,279.21 : x
  2. Step 2: Convert to fraction form
    30,707.48/42,377.13 = 17,279.21/x
  3. Step 3: Cross multiply
    30,707.48x = 42,377.13 × 17,279.21
  4. Step 4: Simplify right side
    30,707.48x = 732,243,116.58
  5. Step 5: Solve for x
    x = 732,243,116.58/30,707.48
  6. Step 6: Final answer
    x = 23,845.76

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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.