Home / 30,905.30-42,649.08-16,758.12

Finding the Fourth Proportional to 30,905.30, 42,649.08 and 16,758.12

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Solution

The fourth proportional to 30,905.30, 42,649.08 and 16,758.12 is: 23,126.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,905.30 : 42,649.08 = 16,758.12 : x
  2. Step 2: Convert to fraction form
    30,905.30/42,649.08 = 16,758.12/x
  3. Step 3: Cross multiply
    30,905.30x = 42,649.08 × 16,758.12
  4. Step 4: Simplify right side
    30,905.30x = 714,718,400.53
  5. Step 5: Solve for x
    x = 714,718,400.53/30,905.30
  6. Step 6: Final answer
    x = 23,126.08

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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.