Home / 30,905.03-42,649.77-17,478.28

Finding the Fourth Proportional to 30,905.03, 42,649.77 and 17,478.28

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Solution

The fourth proportional to 30,905.03, 42,649.77 and 17,478.28 is: 24,120.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,905.03 : 42,649.77 = 17,478.28 : x
  2. Step 2: Convert to fraction form
    30,905.03/42,649.77 = 17,478.28/x
  3. Step 3: Cross multiply
    30,905.03x = 42,649.77 × 17,478.28
  4. Step 4: Simplify right side
    30,905.03x = 745,444,740.85
  5. Step 5: Solve for x
    x = 745,444,740.85/30,905.03
  6. Step 6: Final answer
    x = 24,120.50

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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.