Home / 30,905.45-42,649.34-16,758.29

Finding the Fourth Proportional to 30,905.45, 42,649.34 and 16,758.29

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Solution

The fourth proportional to 30,905.45, 42,649.34 and 16,758.29 is: 23,126.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,905.45 : 42,649.34 = 16,758.29 : x
  2. Step 2: Convert to fraction form
    30,905.45/42,649.34 = 16,758.29/x
  3. Step 3: Cross multiply
    30,905.45x = 42,649.34 × 16,758.29
  4. Step 4: Simplify right side
    30,905.45x = 714,730,030.86
  5. Step 5: Solve for x
    x = 714,730,030.86/30,905.45
  6. Step 6: Final answer
    x = 23,126.34

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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.