Home / 30,438.19-42,003.90-17,009.56

Finding the Fourth Proportional to 30,438.19, 42,003.90 and 17,009.56

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Solution

The fourth proportional to 30,438.19, 42,003.90 and 17,009.56 is: 23,472.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,438.19 : 42,003.90 = 17,009.56 : x
  2. Step 2: Convert to fraction form
    30,438.19/42,003.90 = 17,009.56/x
  3. Step 3: Cross multiply
    30,438.19x = 42,003.90 × 17,009.56
  4. Step 4: Simplify right side
    30,438.19x = 714,467,857.28
  5. Step 5: Solve for x
    x = 714,467,857.28/30,438.19
  6. Step 6: Final answer
    x = 23,472.74

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Half scale
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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.