Home / 30,638.80-42,279.96-17,210.62

Finding the Fourth Proportional to 30,638.80, 42,279.96 and 17,210.62

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Solution

The fourth proportional to 30,638.80, 42,279.96 and 17,210.62 is: 23,749.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,638.80 : 42,279.96 = 17,210.62 : x
  2. Step 2: Convert to fraction form
    30,638.80/42,279.96 = 17,210.62/x
  3. Step 3: Cross multiply
    30,638.80x = 42,279.96 × 17,210.62
  4. Step 4: Simplify right side
    30,638.80x = 727,664,325.18
  5. Step 5: Solve for x
    x = 727,664,325.18/30,638.80
  6. Step 6: Final answer
    x = 23,749.77

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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.