Home / 30,012.76-41,368.21-21,284.34

Finding the Fourth Proportional to 30,012.76, 41,368.21 and 21,284.34

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Solution

The fourth proportional to 30,012.76, 41,368.21 and 21,284.34 is: 29,337.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,012.76 : 41,368.21 = 21,284.34 : x
  2. Step 2: Convert to fraction form
    30,012.76/41,368.21 = 21,284.34/x
  3. Step 3: Cross multiply
    30,012.76x = 41,368.21 × 21,284.34
  4. Step 4: Simplify right side
    30,012.76x = 880,495,046.83
  5. Step 5: Solve for x
    x = 880,495,046.83/30,012.76
  6. Step 6: Final answer
    x = 29,337.36

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Double scale
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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.